{"id":5767,"date":"2025-12-24T05:27:13","date_gmt":"2025-12-24T05:27:13","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5767"},"modified":"2025-12-24T05:27:13","modified_gmt":"2025-12-24T05:27:13","slug":"gb-t-3-1997-metric-thread-ends-and-chamfers-standard","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/it\/blog\/gb-t-3-1997-metric-thread-ends-and-chamfers-standard\/","title":{"rendered":"GB\/T 3-1997 Standard per estremit\u00e0 e smussi filettati metrici"},"content":{"rendered":"<h2 style=\"font-size: 24px; margin-top: 40px;\">Introduzione allo standard<\/h2>\n<p style=\"margin-bottom: 20px;\">La norma GB\/T 3-1997 specifica le dimensioni di eccentricit\u00e0, sottosquadri, spallamenti e smussi delle filettature metriche per uso generico, garantendo connessioni di fissaggio affidabili. Si applica a filettature con passi da 0,2 mm a 6 mm, promuovendo l'uniformit\u00e0 nella produzione e nell'assemblaggio in tutti i settori dell'industria meccanica.<\/p>\n<p style=\"margin-bottom: 20px;\">Equivalente alle norme ISO 3508:1976 e ISO 4755:1983, questa norma fornisce linee guida per le filettature esterne e interne, facilitando l'intercambiabilit\u00e0 e riducendo i problemi di assemblaggio. \u00c8 essenziale per l'ingegneria di precisione, dove le terminazioni delle filettature influiscono su resistenza e adattamento.<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 30px;\">\n<li>Ambito di applicazione: copre le filettature metriche standard per il fissaggio generale.<\/li>\n<li>Importanza: previene concentrazioni di stress e garantisce un accoppiamento corretto.<\/li>\n<li>Applicabilit\u00e0: si estende a tipi di filettatura simili come gli accoppiamenti di transizione.<\/li>\n<\/ul>\n<h2 style=\"font-size: 24px; margin-top: 40px;\">Estremit\u00e0 e spalle filettate esterne<\/h2>\n<p style=\"margin-bottom: 20px;\">Le eccentricit\u00e0 esterne (x) e le spalle (a) delle filettature sono definite per evitare spigoli vivi e garantire un assemblaggio fluido. Le dimensioni variano in base al passo, con opzioni generali, corte e lunghe per diverse esigenze strutturali. Il raggio inferiore delle eccentricit\u00e0 non deve essere inferiore al raggio minimo del raccordo per le filettature complete.<\/p>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"2\">Esaurimento x (max)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"3\">Spalla a (max)<\/th>\n<\/tr>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Generale<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Corto<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Generale<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Lungo<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Corto<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.45<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.05<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.7<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.45<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.9<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">11<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">13.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">9<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">15<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">16.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">22<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">11<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">15<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Riferimento<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">\u22482,5 P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">\u22481,25 P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">\u22483 P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">=4 P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">=2 P<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 20px;\">Note: preferire lunghezze generali; utilizzare lunghezze corte per strutture vincolate, lunghe per prodotti di grado B o C. Dimensioni in mm.<\/p>\n<h2 style=\"font-size: 24px; margin-top: 40px;\">Sottosquadri per filettatura esterna<\/h2>\n<p style=\"margin-bottom: 20px;\">I sottosquadri (g1, g2) alleviano le sollecitazioni alle estremit\u00e0 della filettatura, specificando i diametri (dg) e i raggi (r). L'angolo di transizione \u03b1 \u00e8 di almeno 30\u00b0 per evitare spigoli vivi.<\/p>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">g2 (massimo)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">g1 (min)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">dg<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">r \u2248<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 0,4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.12<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.16<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.05<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 0,6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.16<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 0,7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.45<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 0,7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 0,8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 1.1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 1.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 1.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 2.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 2.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 3.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 4.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 5.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">13.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 6.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">15<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">17.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">11<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 7.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">11<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">d \u2013 8.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Riferimento<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">\u22483 P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">–<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 20px;\">Note: d \u00e8 il diametro nominale; tolleranza dg h13 (&gt;3 mm) o h12 (\u22643 mm). Utilizzare per alleviare le sollecitazioni in applicazioni ad alto carico.<\/p>\n<h2 style=\"font-size: 24px; margin-top: 40px;\">Smussi per filettatura esterna<\/h2>\n<p style=\"margin-bottom: 20px;\">Gli smussi all'inizio della filettatura sono in genere di 45\u00b0, ma sono consentiti anche 60\u00b0 o 30\u00b0; profondit\u00e0 \u2265 altezza della filettatura. Per le filettature rullate, lunghezza incompleta \u2264 2P per mantenere l'integrit\u00e0.<\/p>\n<h2 style=\"font-size: 24px; margin-top: 40px;\">Estremit\u00e0 e spalle filettate interne<\/h2>\n<p style=\"margin-bottom: 20px;\">Le eccentricit\u00e0 interne (X) e gli spallamenti (A) consentono filettature di accoppiamento, con opzioni generali e corte. Preferire la versione generale; utilizzare quella lunga per l'evacuazione dei trucioli, quella corta per i vincoli.<\/p>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"3\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"2\">Esaurimento X (max)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"2\">Spalla A<\/th>\n<\/tr>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"2\">–<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">Generale<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">Lungo<\/th>\n<\/tr>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Generale<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Corto<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.35<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.45<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">14<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">16<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">18<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">22<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">24<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">26<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">21<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">29<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">23<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">32<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">22<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">11<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">35<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">28<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">38<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Riferimento<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">=4P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">=2P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">\u22486~5P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">\u22488~6,5P<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 20px;\">Note: Nessuna spalla corta specificata; dimensioni in mm per un'asportazione ottimale dei trucioli.<\/p>\n<h2 style=\"font-size: 24px; margin-top: 40px;\">Sottosquadri filettati interni<\/h2>\n<p style=\"margin-bottom: 20px;\">I sottosquadri interni (G1) forniscono sollievo, con diametri (Dg) e raggi (R). Sottosquadri corti per spazi limitati; tolleranza Dg H13.<\/p>\n<div class=\"table-container\" style=\"overflow-x: auto; margin-bottom: 20px;\">\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" colspan=\"2\">G1<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">DG<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\" rowspan=\"2\">R \u2248<\/th>\n<\/tr>\n<tr style=\"background-color: #f2f2f2;\">\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Generale<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Corto<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.4<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.25<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.6<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.75<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">0.9<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">14<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">7<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">1.8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">16<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">8<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">4.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">18<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">9<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">20<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">10<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">5.5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">22<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">11<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">2.8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">6<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">24<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">12<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">D + 0,5<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">3<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">Riferimento<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">=4P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">=2P<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">–<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: center;\">\u22480,5 P<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin-bottom: 20px;\">Note: Sottosquadri corti per spazi limitati; diametro nominale D, tolleranza Dg H13; dimensioni in mm.<\/p>\n<h2 style=\"font-size: 24px; margin-top: 40px;\">Smussi filettati interni<\/h2>\n<p style=\"margin-bottom: 20px;\">Gli smussi di ingresso sono in genere di 120\u00b0 o 90\u00b0; diametro (1,05~1)D per un facile innesto della filettatura.<\/p>\n<h2 style=\"font-size: 24px; margin-top: 40px;\">Linee guida e considerazioni sull'applicazione<\/h2>\n<p style=\"margin-bottom: 20px;\">Selezionare le dimensioni in base al passo e all'applicazione; generalmente preferite per l'uso standard, corte per limiti di spazio, lunghe per prestazioni migliorate nei gradi B\/C. Assicurarsi che gli smussi prevengano le sbavature e che i sottosquadri riducano gli aumenti di sollecitazione.<\/p>\n<ul style=\"list-style-type: disc; padding-left: 20px; margin-bottom: 30px;\">\n<li>Da utilizzare per filettature metriche in macchinari e dispositivi di fissaggio.<\/li>\n<li>Verificare con gli equivalenti ISO per la conformit\u00e0 internazionale.<\/li>\n<li>Evitare transizioni brusche per ridurre al minimo l'affaticamento.<\/li>\n<li>Applicare su filettature arrotolate con controllo della lunghezza incompleto.<\/li>\n<li>Integrazione nel CAD per una modellazione precisa.<\/li>\n<\/ul>\n<p style=\"margin-bottom: 20px;\">Queste pratiche migliorano la durata della filettatura e l'efficienza dell'assemblaggio.<\/p>\n<h2 style=\"font-size: 24px; margin-top: 40px;\">Domande frequenti (FAQ)<\/h2>\n<div class=\"faq\" style=\"margin-top: 20px;\">\n<h3 style=\"font-size: 20px; margin-bottom: 10px;\">Qual \u00e8 lo scopo delle perdite di filettatura?<\/h3>\n<p style=\"margin-bottom: 20px;\">Le estremit\u00e0 terminano dolcemente le filettature, riducendo le concentrazioni di sollecitazioni e facilitando l'assemblaggio senza danneggiare le parti accoppiate.<\/p>\n<h3 style=\"font-size: 20px; margin-bottom: 10px;\">Quando usare i tagli corti?<\/h3>\n<p style=\"margin-bottom: 20px;\">I sottosquadri corti sono adatti ad applicazioni con vincoli strutturali in cui lo spazio \u00e8 limitato, ma devono garantire che soddisfino i requisiti di carico.<\/p>\n<h3 style=\"font-size: 20px;\">In che modo il passo influisce sulle dimensioni delle spalle?<\/h3>\n<p style=\"margin-bottom: 20px;\">I passi pi\u00f9 grandi richiedono spalle proporzionalmente pi\u00f9 grandi (ad esempio, 3P in generale) per garantire una superficie di appoggio e una resistenza adeguate.<\/p>\n<h3 style=\"font-size: 20px; margin-bottom: 10px;\">Quale angolo di smusso \u00e8 consigliato?<\/h3>\n<p style=\"margin-bottom: 20px;\">45\u00b0 per gli inizi esterni, 120\u00b0 per gli ingressi interni; alternative come 60\u00b0 o 90\u00b0 in base alla facilit\u00e0 di fabbricazione.<\/p>\n<h3 style=\"font-size: 20px; margin-bottom: 10px;\">Questo standard \u00e8 compatibile con ISO?<\/h3>\n<p style=\"margin-bottom: 20px;\">S\u00ec, equivalente a ISO 3508 e 4755, garantendo l'interoperabilit\u00e0 globale nella progettazione dei thread.<\/p>\n<h3 style=\"font-size: 20px; margin-bottom: 10px;\">Quale tolleranza si applica a dg?<\/h3>\n<p style=\"margin-bottom: 20px;\">h13 per d &gt; 3 mm, h12 per d \u2264 3 mm, mantenendo la precisione nei diametri sottosquadrati.<\/p>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction to the Standard GB\/T 3-1997 specifies dimensions for run-outs, undercuts, shoulders, and chamfers of general-purpose metric screw threads, ensuring reliable fastening connections. It applies to threads with pitches from 0.2 mm to 6 mm, promoting consistency in manufacturing and assembly across mechanical industries. Equivalent to ISO 3508:1976 and ISO 4755:1983, this standard provides guidelines [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5767","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/posts\/5767","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/comments?post=5767"}],"version-history":[{"count":1,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/posts\/5767\/revisions"}],"predecessor-version":[{"id":5768,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/posts\/5767\/revisions\/5768"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/media?parent=5767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/categories?post=5767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/tags?post=5767"}],"curies":[{"name":"parola chiave","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}