{"id":5751,"date":"2025-12-24T05:09:10","date_gmt":"2025-12-24T05:09:10","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5751"},"modified":"2025-12-24T05:09:10","modified_gmt":"2025-12-24T05:09:10","slug":"gb-t-197-2018-thread-tolerance-standard","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/it\/blog\/gb-t-197-2018-thread-tolerance-standard\/","title":{"rendered":"Standard di tolleranza della filettatura GB\/T 197-2018"},"content":{"rendered":"<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Introduzione allo standard<\/h2>\n<p style=\"margin: 10px 0;\">La norma GB\/T 197-2018 specifica le tolleranze per le filettature metriche di uso generale, garantendo intercambiabilit\u00e0 e prestazioni nelle applicazioni meccaniche. Questa norma definisce le deviazioni fondamentali, le tolleranze di diametro, le lunghezze di impegno e le zone preferenziali per le filettature interne ed esterne, applicabili a settori quali l'automotive, l'aerospaziale e la meccanica.<\/p>\n<p style=\"margin: 10px 0;\">Le tolleranze sono classificate in gradi (da 3 a 9), dove i numeri pi\u00f9 bassi indicano una maggiore precisione. Le deviazioni fondamentali (EI\/es) definiscono il campo di tolleranza, mentre le tolleranze (T) ne definiscono l'ampiezza. Lo standard prevede tre gruppi di lunghezza di accoppiamento: corta (S), normale (N) e lunga (L), che guidano i tipi di accoppiamento dal gioco all'interferenza.<\/p>\n<ul style=\"margin: 10px 0 10px 20px;\">\n<li>Le filettature interne utilizzano le posizioni G e H.<\/li>\n<li>Le filettature esterne utilizzano le lettere a, b, c, d, e, f, g, h.<\/li>\n<li>Le zone preferenziali come 6H\/6g garantiscono una vestibilit\u00e0 affidabile.<\/li>\n<\/ul>\n<p style=\"margin: 10px 0;\">Questa guida fornisce spunti pratici per la selezione delle tolleranze e l'ottimizzazione dei progetti in termini di producibilit\u00e0 e funzionalit\u00e0.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Deviazioni fondamentali per filettature interne ed esterne<\/h2>\n<p style=\"margin: 10px 0;\">La Tabella 1 elenca le deviazioni fondamentali (EI per interne, es per esterne) in \u03bcm, per passo (P). Queste definiscono la zona di tolleranza rispetto al profilo di base, aspetto cruciale per il controllo dell'accoppiamento.<\/p>\n<div class=\"table-wrapper\" style=\"overflow-x: auto; margin: 20px 0;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"4\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"10\">Deviazione fondamentale (\u03bcm)<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Filettature interne<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"8\">Thread esterni<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">G EI<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">H EI<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">a es<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">migliori<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">ceci<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">des<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">e es<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">feste<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">et\u00e0<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">lui<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.2<\/td>\n<td>17<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-17<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.25<\/td>\n<td>18<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-18<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.3<\/td>\n<td>18<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-18<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.35<\/td>\n<td>19<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-34<\/td>\n<td>-19<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.4<\/td>\n<td>19<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-34<\/td>\n<td>-19<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.45<\/td>\n<td>20<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-35<\/td>\n<td>-20<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td>20<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-50<\/td>\n<td>-36<\/td>\n<td>-20<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.6<\/td>\n<td>21<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-53<\/td>\n<td>-36<\/td>\n<td>-21<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.7<\/td>\n<td>22<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-56<\/td>\n<td>-38<\/td>\n<td>-22<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.75<\/td>\n<td>22<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-56<\/td>\n<td>-38<\/td>\n<td>-22<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.8<\/td>\n<td>24<\/td>\n<td>0<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>-60<\/td>\n<td>-38<\/td>\n<td>-24<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td>26<\/td>\n<td>0<\/td>\n<td>-290<\/td>\n<td>-200<\/td>\n<td>-130<\/td>\n<td>-85<\/td>\n<td>-60<\/td>\n<td>-40<\/td>\n<td>-26<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.25<\/td>\n<td>28<\/td>\n<td>0<\/td>\n<td>-295<\/td>\n<td>-205<\/td>\n<td>-135<\/td>\n<td>-90<\/td>\n<td>-63<\/td>\n<td>-42<\/td>\n<td>-28<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td>32<\/td>\n<td>0<\/td>\n<td>-300<\/td>\n<td>-212<\/td>\n<td>-140<\/td>\n<td>-95<\/td>\n<td>-67<\/td>\n<td>-45<\/td>\n<td>-32<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.75<\/td>\n<td>34<\/td>\n<td>0<\/td>\n<td>-310<\/td>\n<td>-220<\/td>\n<td>-145<\/td>\n<td>-100<\/td>\n<td>-71<\/td>\n<td>-48<\/td>\n<td>-34<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td>38<\/td>\n<td>0<\/td>\n<td>-315<\/td>\n<td>-225<\/td>\n<td>-150<\/td>\n<td>-105<\/td>\n<td>-71<\/td>\n<td>-52<\/td>\n<td>-38<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td>42<\/td>\n<td>0<\/td>\n<td>-325<\/td>\n<td>-235<\/td>\n<td>-160<\/td>\n<td>-110<\/td>\n<td>-80<\/td>\n<td>-58<\/td>\n<td>-42<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td>48<\/td>\n<td>0<\/td>\n<td>-335<\/td>\n<td>-245<\/td>\n<td>-170<\/td>\n<td>-115<\/td>\n<td>-85<\/td>\n<td>-63<\/td>\n<td>-48<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3.5<\/td>\n<td>53<\/td>\n<td>0<\/td>\n<td>-345<\/td>\n<td>-255<\/td>\n<td>-180<\/td>\n<td>-125<\/td>\n<td>-90<\/td>\n<td>-70<\/td>\n<td>-53<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/td>\n<td>60<\/td>\n<td>0<\/td>\n<td>-355<\/td>\n<td>-265<\/td>\n<td>-190<\/td>\n<td>-130<\/td>\n<td>-95<\/td>\n<td>-75<\/td>\n<td>-60<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4.5<\/td>\n<td>63<\/td>\n<td>0<\/td>\n<td>-365<\/td>\n<td>-280<\/td>\n<td>-200<\/td>\n<td>-135<\/td>\n<td>-100<\/td>\n<td>-80<\/td>\n<td>-63<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/td>\n<td>71<\/td>\n<td>0<\/td>\n<td>-375<\/td>\n<td>-290<\/td>\n<td>-212<\/td>\n<td>-140<\/td>\n<td>-106<\/td>\n<td>-85<\/td>\n<td>-71<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5.5<\/td>\n<td>75<\/td>\n<td>0<\/td>\n<td>-385<\/td>\n<td>-300<\/td>\n<td>-224<\/td>\n<td>-150<\/td>\n<td>-112<\/td>\n<td>-90<\/td>\n<td>-75<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/td>\n<td>80<\/td>\n<td>0<\/td>\n<td>-395<\/td>\n<td>-310<\/td>\n<td>-236<\/td>\n<td>-155<\/td>\n<td>-118<\/td>\n<td>-95<\/td>\n<td>-80<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td>100<\/td>\n<td>0<\/td>\n<td>-425<\/td>\n<td>-340<\/td>\n<td>-265<\/td>\n<td>-180<\/td>\n<td>-140<\/td>\n<td>-118<\/td>\n<td>-100<\/td>\n<td>0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin: 10px 0;\">Utilizzare le deviazioni per determinare l'accoppiamento: valori positivi per il gioco interno, valori negativi per il gioco esterno, al fine di ottenere l'interferenza o il gioco desiderati.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Tolleranze per il diametro minore delle filettature interne (T_{D1})<\/h2>\n<p style=\"margin: 10px 0;\">La Tabella 2 specifica T_{D1} in \u03bcm per passo, per i gradi da 4 a 8. Questi garantiscono un'adeguata distanza dalla radice, prevenendo interferenze.<\/p>\n<div class=\"table-wrapper\" style=\"overflow-x: auto; margin: 20px 0;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"5\">Grado di tolleranza<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.2<\/td>\n<td>38<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.25<\/td>\n<td>45<\/td>\n<td>56<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.3<\/td>\n<td>53<\/td>\n<td>67<\/td>\n<td>85<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.35<\/td>\n<td>63<\/td>\n<td>80<\/td>\n<td>100<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.4<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>112<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.45<\/td>\n<td>80<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td>90<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.6<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.7<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.75<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.8<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.25<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.75<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<td>530<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<td>600<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<td>560<\/td>\n<td>710<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<td>630<\/td>\n<td>800<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3.5<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<td>560<\/td>\n<td>710<\/td>\n<td>900<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<td>600<\/td>\n<td>750<\/td>\n<td>950<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4.5<\/td>\n<td>425<\/td>\n<td>530<\/td>\n<td>670<\/td>\n<td>850<\/td>\n<td>1060<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/td>\n<td>450<\/td>\n<td>560<\/td>\n<td>710<\/td>\n<td>900<\/td>\n<td>1120<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5.5<\/td>\n<td>475<\/td>\n<td>600<\/td>\n<td>750<\/td>\n<td>950<\/td>\n<td>1180<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/td>\n<td>500<\/td>\n<td>630<\/td>\n<td>800<\/td>\n<td>1000<\/td>\n<td>1250<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td>630<\/td>\n<td>800<\/td>\n<td>1000<\/td>\n<td>1250<\/td>\n<td>1600<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin: 10px 0;\">Le qualit\u00e0 superiori offrono tolleranze pi\u00f9 strette, adatte per accoppiamenti di precisione in passi ridotti.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Tolleranze per il diametro maggiore delle filettature esterne (T_d)<\/h2>\n<p style=\"margin: 10px 0;\">La Tabella 3 definisce T_d in \u03bcm in base al passo, per i gradi 4, 6 e 8. Questi parametri controllano il gioco della cresta, influenzando la resistenza della filettatura.<\/p>\n<div class=\"table-wrapper\" style=\"overflow-x: auto; margin: 20px 0;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"3\">Grado di tolleranza<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.2<\/td>\n<td>36<\/td>\n<td>56<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.25<\/td>\n<td>42<\/td>\n<td>67<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.3<\/td>\n<td>48<\/td>\n<td>75<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.35<\/td>\n<td>53<\/td>\n<td>85<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.4<\/td>\n<td>60<\/td>\n<td>95<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.45<\/td>\n<td>63<\/td>\n<td>100<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.5<\/td>\n<td>67<\/td>\n<td>106<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.6<\/td>\n<td>80<\/td>\n<td>125<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.7<\/td>\n<td>90<\/td>\n<td>140<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.75<\/td>\n<td>90<\/td>\n<td>140<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">0.8<\/td>\n<td>95<\/td>\n<td>150<\/td>\n<td>236<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1<\/td>\n<td>112<\/td>\n<td>180<\/td>\n<td>280<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.25<\/td>\n<td>132<\/td>\n<td>212<\/td>\n<td>335<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.5<\/td>\n<td>150<\/td>\n<td>236<\/td>\n<td>375<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.75<\/td>\n<td>170<\/td>\n<td>265<\/td>\n<td>425<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td>180<\/td>\n<td>280<\/td>\n<td>450<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td>212<\/td>\n<td>335<\/td>\n<td>530<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td>236<\/td>\n<td>375<\/td>\n<td>600<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3.5<\/td>\n<td>265<\/td>\n<td>425<\/td>\n<td>670<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/td>\n<td>300<\/td>\n<td>475<\/td>\n<td>750<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4.5<\/td>\n<td>315<\/td>\n<td>500<\/td>\n<td>800<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/td>\n<td>335<\/td>\n<td>530<\/td>\n<td>850<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5.5<\/td>\n<td>355<\/td>\n<td>560<\/td>\n<td>900<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/td>\n<td>375<\/td>\n<td>600<\/td>\n<td>950<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td>450<\/td>\n<td>710<\/td>\n<td>1180<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin: 10px 0;\">I gradi 4 e 6 sono per la precisione, l'8 per accoppiamenti pi\u00f9 ampi in passaggi pi\u00f9 ampi.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Tolleranze per il diametro primitivo delle filettature interne (T_{D2})<\/h2>\n<p style=\"margin: 10px 0;\">La Tabella 4 riporta T_{D2} in \u03bcm, segmentato per diametro maggiore (D) e passo, per le classi da 4 a 8. Le tolleranze del diametro primitivo sono fondamentali per la capacit\u00e0 portante.<\/p>\n<div class=\"table-wrapper\" style=\"overflow-x: auto; margin: 20px 0;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Diametro maggiore D (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"5\">Grado di tolleranza<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">&gt;<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">\u2264<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"3\">0.99<\/td>\n<td rowspan=\"3\">1.4<\/td>\n<td>0.2<\/td>\n<td>40<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.25<\/td>\n<td>45<\/td>\n<td>56<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.3<\/td>\n<td>48<\/td>\n<td>60<\/td>\n<td>75<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"5\">1.4<\/td>\n<td rowspan=\"5\">2.8<\/td>\n<td>0.2<\/td>\n<td>42<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.25<\/td>\n<td>48<\/td>\n<td>60<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.35<\/td>\n<td>53<\/td>\n<td>67<\/td>\n<td>85<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.4<\/td>\n<td>56<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.45<\/td>\n<td>60<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"6\">2.8<\/td>\n<td rowspan=\"6\">5.6<\/td>\n<td>0.35<\/td>\n<td>56<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.5<\/td>\n<td>63<\/td>\n<td>80<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.6<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.7<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.75<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.8<\/td>\n<td>80<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"4\">5.6<\/td>\n<td rowspan=\"4\">11.2<\/td>\n<td>0.75<\/td>\n<td>85<\/td>\n<td>106<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<\/tr>\n<tr>\n<td>1.25<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"6\">11.2<\/td>\n<td rowspan=\"6\">22.4<\/td>\n<td>1<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<\/tr>\n<tr>\n<td>1.25<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<\/tr>\n<tr>\n<td>1.75<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<\/tr>\n<tr>\n<td>2.5<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"7\">22.4<\/td>\n<td rowspan=\"7\">45<\/td>\n<td>1<\/td>\n<td>106<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<\/tr>\n<tr>\n<td>3.5<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<\/tr>\n<tr>\n<td>4.5<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"7\">45<\/td>\n<td rowspan=\"7\">90<\/td>\n<td>1.5<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<td>530<\/td>\n<\/tr>\n<tr>\n<td>5.5<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<td>560<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<td>600<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"5\">90<\/td>\n<td rowspan=\"5\">180<\/td>\n<td>2<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<td>530<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<td>630<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<td>560<\/td>\n<td>710<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"4\">180<\/td>\n<td rowspan=\"4\">355<\/td>\n<td>3<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<td>530<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<td>600<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<td>530<\/td>\n<td>670<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<td>600<\/td>\n<td>750<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin: 10px 0;\">Le tolleranze aumentano con il diametro e il passo, consentendo variazioni di produzione nelle filettature di dimensioni maggiori.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Tolleranze per il diametro primitivo delle filettature esterne (T_{d2})<\/h2>\n<p style=\"margin: 10px 0;\">La Tabella 5 riporta in dettaglio T_{d2} in \u03bcm, per diametro maggiore (d) e passo, per le classi da 3 a 9. Questi valori sono fondamentali per l'ingaggio della filettatura e la distribuzione del carico.<\/p>\n<div class=\"table-wrapper\" style=\"overflow-x: auto; margin: 20px 0;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Diametro maggiore d (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"7\">Grado di tolleranza<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">&gt;<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">\u2264<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">7<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">9<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"3\">0.99<\/td>\n<td rowspan=\"3\">1.4<\/td>\n<td>0.2<\/td>\n<td>24<\/td>\n<td>30<\/td>\n<td>38<\/td>\n<td>48<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.25<\/td>\n<td>26<\/td>\n<td>34<\/td>\n<td>42<\/td>\n<td>53<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.3<\/td>\n<td>28<\/td>\n<td>36<\/td>\n<td>45<\/td>\n<td>56<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"5\">1.4<\/td>\n<td rowspan=\"5\">2.8<\/td>\n<td>0.2<\/td>\n<td>25<\/td>\n<td>32<\/td>\n<td>40<\/td>\n<td>50<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.25<\/td>\n<td>28<\/td>\n<td>36<\/td>\n<td>45<\/td>\n<td>56<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.35<\/td>\n<td>32<\/td>\n<td>40<\/td>\n<td>50<\/td>\n<td>63<\/td>\n<td>80<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.4<\/td>\n<td>34<\/td>\n<td>42<\/td>\n<td>53<\/td>\n<td>67<\/td>\n<td>85<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.45<\/td>\n<td>36<\/td>\n<td>45<\/td>\n<td>56<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"6\">2.8<\/td>\n<td rowspan=\"6\">5.6<\/td>\n<td>0.35<\/td>\n<td>34<\/td>\n<td>42<\/td>\n<td>53<\/td>\n<td>67<\/td>\n<td>85<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.5<\/td>\n<td>38<\/td>\n<td>48<\/td>\n<td>60<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.6<\/td>\n<td>42<\/td>\n<td>53<\/td>\n<td>67<\/td>\n<td>85<\/td>\n<td>106<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.7<\/td>\n<td>45<\/td>\n<td>56<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>112<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.75<\/td>\n<td>45<\/td>\n<td>56<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>112<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>0.8<\/td>\n<td>48<\/td>\n<td>60<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"4\">5.6<\/td>\n<td rowspan=\"4\">11.2<\/td>\n<td>0.75<\/td>\n<td>50<\/td>\n<td>63<\/td>\n<td>80<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>56<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<\/tr>\n<tr>\n<td>1.25<\/td>\n<td>60<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>67<\/td>\n<td>85<\/td>\n<td>106<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"6\">11.2<\/td>\n<td rowspan=\"6\">22.4<\/td>\n<td>1<\/td>\n<td>60<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<\/tr>\n<tr>\n<td>1.25<\/td>\n<td>67<\/td>\n<td>85<\/td>\n<td>106<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>71<\/td>\n<td>90<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<\/tr>\n<tr>\n<td>1.75<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>80<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<\/tr>\n<tr>\n<td>2.5<\/td>\n<td>85<\/td>\n<td>106<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"7\">22.4<\/td>\n<td rowspan=\"7\">45<\/td>\n<td>1<\/td>\n<td>63<\/td>\n<td>80<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>75<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>85<\/td>\n<td>106<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<\/tr>\n<tr>\n<td>3.5<\/td>\n<td>106<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<\/tr>\n<tr>\n<td>4.5<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"7\">45<\/td>\n<td rowspan=\"7\">90<\/td>\n<td>1.5<\/td>\n<td>80<\/td>\n<td>100<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>90<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>106<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<\/tr>\n<tr>\n<td>5.5<\/td>\n<td>132<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<td>530<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<td>560<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"5\">90<\/td>\n<td rowspan=\"5\">180<\/td>\n<td>2<\/td>\n<td>95<\/td>\n<td>118<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>112<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>150<\/td>\n<td>190<\/td>\n<td>236<\/td>\n<td>300<\/td>\n<td>375<\/td>\n<td>475<\/td>\n<td>600<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>170<\/td>\n<td>212<\/td>\n<td>265<\/td>\n<td>335<\/td>\n<td>425<\/td>\n<td>530<\/td>\n<td>670<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"4\">180<\/td>\n<td rowspan=\"4\">355<\/td>\n<td>3<\/td>\n<td>125<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>140<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<td>560<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>160<\/td>\n<td>200<\/td>\n<td>250<\/td>\n<td>315<\/td>\n<td>400<\/td>\n<td>500<\/td>\n<td>630<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>180<\/td>\n<td>224<\/td>\n<td>280<\/td>\n<td>355<\/td>\n<td>450<\/td>\n<td>560<\/td>\n<td>710<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin: 10px 0;\">Il grado 3 \u00e8 per la massima precisione, fino al grado 9 per accoppiamenti grossolani in diametri grandi.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Lunghezza di innesto della filettatura<\/h2>\n<p style=\"margin: 10px 0;\">La Tabella 6 definisce le lunghezze di innesto in mm in base al diametro maggiore e al passo, raggruppate come S (corto), N (normale), L (lungo). Queste influenzano la selezione della tolleranza per la capacit\u00e0 di carico.<\/p>\n<div class=\"table-wrapper\" style=\"overflow-x: auto; margin: 20px 0;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Diametro maggiore D\/d (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"3\">Passo P (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"1\" rowspan=\"2\">S \u2264<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">N<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"1\" rowspan=\"2\">L &gt;<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">&gt;<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">\u2264<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">&gt;<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">\u2264<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"3\">0.99<\/td>\n<td rowspan=\"3\">1.4<\/td>\n<td>0.2<\/td>\n<td>0.5<\/td>\n<td>0.5<\/td>\n<td>1.4<\/td>\n<td>1.4<\/td>\n<\/tr>\n<tr>\n<td>0.25<\/td>\n<td>0.6<\/td>\n<td>0.6<\/td>\n<td>1.7<\/td>\n<td>1.7<\/td>\n<\/tr>\n<tr>\n<td>0.3<\/td>\n<td>0.7<\/td>\n<td>0.7<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"5\">1.4<\/td>\n<td rowspan=\"5\">2.8<\/td>\n<td>0.2<\/td>\n<td>0.5<\/td>\n<td>0.5<\/td>\n<td>1.5<\/td>\n<td>1.5<\/td>\n<\/tr>\n<tr>\n<td>0.25<\/td>\n<td>0.6<\/td>\n<td>0.6<\/td>\n<td>1.9<\/td>\n<td>1.9<\/td>\n<\/tr>\n<tr>\n<td>0.35<\/td>\n<td>0.8<\/td>\n<td>0.8<\/td>\n<td>2.6<\/td>\n<td>2.6<\/td>\n<\/tr>\n<tr>\n<td>0.4<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<td>3<\/td>\n<td>3<\/td>\n<\/tr>\n<tr>\n<td>0.45<\/td>\n<td>1.3<\/td>\n<td>1.3<\/td>\n<td>3.8<\/td>\n<td>3.8<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"6\">2.8<\/td>\n<td rowspan=\"6\">5.6<\/td>\n<td>0.35<\/td>\n<td>1<\/td>\n<td>1<\/td>\n<td>3<\/td>\n<td>3<\/td>\n<\/tr>\n<tr>\n<td>0.5<\/td>\n<td>1.5<\/td>\n<td>1.5<\/td>\n<td>4.5<\/td>\n<td>4.5<\/td>\n<\/tr>\n<tr>\n<td>0.6<\/td>\n<td>1.7<\/td>\n<td>1.7<\/td>\n<td>5<\/td>\n<td>5<\/td>\n<\/tr>\n<tr>\n<td>0.7<\/td>\n<td>2<\/td>\n<td>2<\/td>\n<td>6<\/td>\n<td>6<\/td>\n<\/tr>\n<tr>\n<td>0.75<\/td>\n<td>2.2<\/td>\n<td>2.2<\/td>\n<td>6.7<\/td>\n<td>6.7<\/td>\n<\/tr>\n<tr>\n<td>0.8<\/td>\n<td>2.5<\/td>\n<td>2.5<\/td>\n<td>7.5<\/td>\n<td>7.5<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"4\">5.6<\/td>\n<td rowspan=\"4\">11.2<\/td>\n<td>0.75<\/td>\n<td>2.4<\/td>\n<td>2.4<\/td>\n<td>7.1<\/td>\n<td>7.1<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>3<\/td>\n<td>3<\/td>\n<td>9<\/td>\n<td>9<\/td>\n<\/tr>\n<tr>\n<td>1.25<\/td>\n<td>4<\/td>\n<td>4<\/td>\n<td>12<\/td>\n<td>12<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>5<\/td>\n<td>5<\/td>\n<td>15<\/td>\n<td>15<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"6\">11.2<\/td>\n<td rowspan=\"6\">22.4<\/td>\n<td>1<\/td>\n<td>3.8<\/td>\n<td>3.8<\/td>\n<td>11<\/td>\n<td>11<\/td>\n<\/tr>\n<tr>\n<td>1.25<\/td>\n<td>4.5<\/td>\n<td>4.5<\/td>\n<td>13<\/td>\n<td>13<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>5.6<\/td>\n<td>5.6<\/td>\n<td>16<\/td>\n<td>16<\/td>\n<\/tr>\n<tr>\n<td>1.75<\/td>\n<td>6<\/td>\n<td>6<\/td>\n<td>18<\/td>\n<td>18<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>8<\/td>\n<td>8<\/td>\n<td>24<\/td>\n<td>24<\/td>\n<\/tr>\n<tr>\n<td>2.5<\/td>\n<td>10<\/td>\n<td>10<\/td>\n<td>30<\/td>\n<td>30<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"7\">22.4<\/td>\n<td rowspan=\"7\">45<\/td>\n<td>1<\/td>\n<td>4<\/td>\n<td>4<\/td>\n<td>12<\/td>\n<td>12<\/td>\n<\/tr>\n<tr>\n<td>1.5<\/td>\n<td>6.3<\/td>\n<td>6.3<\/td>\n<td>19<\/td>\n<td>19<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>8.5<\/td>\n<td>8.5<\/td>\n<td>25<\/td>\n<td>25<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>12<\/td>\n<td>12<\/td>\n<td>36<\/td>\n<td>36<\/td>\n<\/tr>\n<tr>\n<td>3.5<\/td>\n<td>15<\/td>\n<td>15<\/td>\n<td>45<\/td>\n<td>45<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>18<\/td>\n<td>18<\/td>\n<td>53<\/td>\n<td>53<\/td>\n<\/tr>\n<tr>\n<td>4.5<\/td>\n<td>21<\/td>\n<td>21<\/td>\n<td>63<\/td>\n<td>63<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"7\">45<\/td>\n<td rowspan=\"7\">90<\/td>\n<td>1.5<\/td>\n<td>7.5<\/td>\n<td>7.5<\/td>\n<td>22<\/td>\n<td>22<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>9.5<\/td>\n<td>9.5<\/td>\n<td>28<\/td>\n<td>28<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>15<\/td>\n<td>15<\/td>\n<td>45<\/td>\n<td>45<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>19<\/td>\n<td>19<\/td>\n<td>56<\/td>\n<td>56<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>24<\/td>\n<td>24<\/td>\n<td>71<\/td>\n<td>71<\/td>\n<\/tr>\n<tr>\n<td>5.5<\/td>\n<td>28<\/td>\n<td>28<\/td>\n<td>85<\/td>\n<td>85<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>32<\/td>\n<td>32<\/td>\n<td>95<\/td>\n<td>95<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"5\">90<\/td>\n<td rowspan=\"5\">180<\/td>\n<td>2<\/td>\n<td>12<\/td>\n<td>12<\/td>\n<td>36<\/td>\n<td>36<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>18<\/td>\n<td>18<\/td>\n<td>53<\/td>\n<td>53<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>24<\/td>\n<td>24<\/td>\n<td>71<\/td>\n<td>71<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>36<\/td>\n<td>36<\/td>\n<td>106<\/td>\n<td>106<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>45<\/td>\n<td>45<\/td>\n<td>132<\/td>\n<td>132<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"4\">180<\/td>\n<td rowspan=\"4\">355<\/td>\n<td>3<\/td>\n<td>20<\/td>\n<td>20<\/td>\n<td>60<\/td>\n<td>60<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>26<\/td>\n<td>26<\/td>\n<td>80<\/td>\n<td>80<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>40<\/td>\n<td>40<\/td>\n<td>118<\/td>\n<td>118<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>50<\/td>\n<td>50<\/td>\n<td>150<\/td>\n<td>150<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin: 10px 0;\">Scegliere il gruppo in base all'applicazione: S per utilizzi brevi, L per carichi elevati.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Zone di tolleranza preferite<\/h2>\n<p style=\"margin: 10px 0;\">Le zone preferite combinano deviazione e tolleranza per accoppiamenti comuni. Per filettature interne: 4G, 5G, 6G, 4H, 5H, 6H, 7H, 8H. Per filettature esterne: 4h, 5g6g, 6e, 6f, 6g, 6h, 7g6g, 8g. Esempio: 6H\/6g per accoppiamento con gioco di media precisione.<\/p>\n<p style=\"margin: 10px 0;\">Queste zone facilitano la selezione degli standard, garantendo la compatibilit\u00e0 nelle catene di approvvigionamento globali.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Domande frequenti (FAQ)<\/h2>\n<hr \/>\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li style=\"list-style-type: none;\">\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li><strong>Qual \u00e8 il ruolo delle deviazioni fondamentali?<\/strong><br \/>\nEssi definiscono la zona di tolleranza, determinando il tipo di accoppiamento: EI positivo per il gioco interno, es negativo per quello esterno.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<hr \/>\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li style=\"list-style-type: none;\">\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li><strong>Come selezionare il gruppo in base alla durata del contratto?<\/strong><br \/>\nScegliere S per corto, N per normale, L per lungo in base al carico e alle vibrazioni; L offre una maggiore resistenza ma richiede tolleranze pi\u00f9 strette.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<hr \/>\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li style=\"list-style-type: none;\">\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li><strong>Perch\u00e9 le tolleranze del diametro primitivo sono critiche?<\/strong><br \/>\nControllano l'area di contatto, influenzando la distribuzione del carico e la resistenza alla fatica; gradi di serraggio pi\u00f9 stretti prevengono l'allentamento.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<hr \/>\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li style=\"list-style-type: none;\">\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li><strong>Che cos'\u00e8 una zona di tolleranza preferita come 6H\/6g?<\/strong><br \/>\nCombina il grado 6 con deviazioni H\/g per un accoppiamento di gioco di media precisione, ampiamente utilizzato nell'ingegneria generale.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<hr \/>\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li style=\"list-style-type: none;\">\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li><strong>Come variano le tolleranze in funzione del passo e del diametro?<\/strong><br \/>\nLe loro dimensioni aumentano con passi e diametri maggiori per far fronte alle sfide di produzione, pur mantenendo la funzionalit\u00e0.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<hr \/>\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li style=\"list-style-type: none;\">\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li><strong>La norma pu\u00f2 essere applicata anche ai fili rivestiti?<\/strong><br \/>\nS\u00ec, con delle modifiche; indicare ad esempio 6 g (prima del rivestimento) per l'adattamento post-rivestimento secondo le linee guida dell'allegato.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<hr \/>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction to the Standard GB\/T 197-2018 specifies tolerances for general purpose metric screw threads, ensuring interchangeability and performance in mechanical applications. This standard defines fundamental deviations, diameter tolerances, engagement lengths, and preferred zones for internal and external threads, applicable to industries like automotive, aerospace, and machinery. Tolerances are categorized by grades (3 to 9), with [&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-5751","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\/5751","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=5751"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/posts\/5751\/revisions"}],"predecessor-version":[{"id":5753,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/posts\/5751\/revisions\/5753"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/media?parent=5751"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/categories?post=5751"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/it\/wp-json\/wp\/v2\/tags?post=5751"}],"curies":[{"name":"parola chiave","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}