{"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\/pt\/blog\/gb-t-197-2018-thread-tolerance-standard\/","title":{"rendered":"Norma de toler\u00e2ncia de rosca GB\/T 197-2018"},"content":{"rendered":"<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Introdu\u00e7\u00e3o ao Padr\u00e3o<\/h2>\n<p style=\"margin: 10px 0;\">A norma GB\/T 197-2018 especifica as toler\u00e2ncias para roscas m\u00e9tricas de uso geral, garantindo a intercambialidade e o desempenho em aplica\u00e7\u00f5es mec\u00e2nicas. Esta norma define desvios fundamentais, toler\u00e2ncias de di\u00e2metro, comprimentos de engate e zonas preferenciais para roscas internas e externas, aplic\u00e1veis \u200b\u200ba setores como o automotivo, aeroespacial e de m\u00e1quinas.<\/p>\n<p style=\"margin: 10px 0;\">As toler\u00e2ncias s\u00e3o categorizadas por graus (de 3 a 9), sendo que n\u00fameros menores indicam maior precis\u00e3o. Os desvios fundamentais (EI\/es) posicionam o campo de toler\u00e2ncia, enquanto as toler\u00e2ncias (T) definem sua largura. A norma suporta tr\u00eas grupos de comprimento de engate: curto (S), normal (N) e longo (L), orientando os tipos de ajuste desde folga at\u00e9 interfer\u00eancia.<\/p>\n<ul style=\"margin: 10px 0 10px 20px;\">\n<li>As roscas internas utilizam as posi\u00e7\u00f5es G e H.<\/li>\n<li>Os threads externos usam a, b, c, d, e, f, g, h.<\/li>\n<li>Zonas preferenciais como 6H\/6g garantem um ajuste confi\u00e1vel.<\/li>\n<\/ul>\n<p style=\"margin: 10px 0;\">Este guia fornece informa\u00e7\u00f5es pr\u00e1ticas para a sele\u00e7\u00e3o de toler\u00e2ncias e a otimiza\u00e7\u00e3o de projetos em termos de fabrica\u00e7\u00e3o e funcionalidade.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Desvios fundamentais para roscas internas e externas<\/h2>\n<p style=\"margin: 10px 0;\">A Tabela 1 lista os desvios fundamentais (EI para interno, es para externo) em \u03bcm, por passo (P). Estes posicionam a zona de toler\u00e2ncia em rela\u00e7\u00e3o ao perfil b\u00e1sico, crucial para o controle do ajuste.<\/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\">Desvio fundamental (\u03bcm)<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Roscas internas<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"8\">Roscas externas<\/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\">um es<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">melhores<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">ces es<\/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\">fes<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">ges<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" rowspan=\"2\">ele \u00e9<\/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;\">Utilize os desvios para determinar o ajuste: positivo para folga interna, negativo para folga externa, a fim de obter a interfer\u00eancia ou folga desejada.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Toler\u00e2ncias para o di\u00e2metro menor das roscas internas (T_{D1})<\/h2>\n<p style=\"margin: 10px 0;\">A Tabela 2 especifica T_{D1} em \u03bcm por passo, para graus de 4 a 8. Estes garantem a folga adequada da raiz, evitando interfer\u00eancias.<\/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\">Grau de toler\u00e2ncia<\/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;\">Os graus de qualidade superiores oferecem toler\u00e2ncias mais rigorosas, adequadas para ajustes de precis\u00e3o em espa\u00e7amentos pequenos.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Toler\u00e2ncias para o di\u00e2metro maior das roscas externas (T_d)<\/h2>\n<p style=\"margin: 10px 0;\">A Tabela 3 define T_d em \u03bcm por passo, para as classes 4, 6 e 8. Esses par\u00e2metros controlam a folga da crista, influenciando a resist\u00eancia da rosca.<\/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\">Grau de toler\u00e2ncia<\/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;\">Os graus 4 e 6 s\u00e3o para precis\u00e3o, o grau 8 para encaixes mais folgados em espa\u00e7amentos maiores.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Toler\u00e2ncias para o di\u00e2metro primitivo de roscas internas (T_{D2})<\/h2>\n<p style=\"margin: 10px 0;\">A Tabela 4 fornece T_{D2} em \u03bcm, segmentado por di\u00e2metro maior (D) e passo, para as classes 4 a 8. As toler\u00e2ncias do di\u00e2metro primitivo s\u00e3o cr\u00edticas para a capacidade de carga.<\/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\">Di\u00e2metro maior 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\">Grau de toler\u00e2ncia<\/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;\">As toler\u00e2ncias aumentam com o di\u00e2metro e o passo, permitindo varia\u00e7\u00f5es de fabrica\u00e7\u00e3o em roscas maiores.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Toler\u00e2ncias para o di\u00e2metro primitivo das roscas externas (T_{d2})<\/h2>\n<p style=\"margin: 10px 0;\">A Tabela 5 detalha T_{d2} em \u03bcm, por di\u00e2metro maior (d) e passo, para classes de 3 a 9. Estes s\u00e3o fundamentais para o engate da rosca e distribui\u00e7\u00e3o de carga.<\/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\">Di\u00e2metro maior 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\">Grau de toler\u00e2ncia<\/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;\">O grau 3 \u00e9 para ultraprecis\u00e3o, at\u00e9 o grau 9 para ajustes grosseiros em grandes di\u00e2metros.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Comprimentos de Engate da Rosca<\/h2>\n<p style=\"margin: 10px 0;\">A Tabela 6 define os comprimentos de engate em mm por di\u00e2metro maior e passo, agrupados como S (curto), N (normal) e L (longo). Esses fatores influenciam a sele\u00e7\u00e3o da toler\u00e2ncia para a capacidade de carga.<\/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\">Di\u00e2metro maior 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;\">Escolha o grupo com base na aplica\u00e7\u00e3o: S para compromissos de curta dura\u00e7\u00e3o, L para cargas elevadas.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Zonas de Toler\u00e2ncia Preferenciais<\/h2>\n<p style=\"margin: 10px 0;\">As zonas preferenciais combinam desvio e toler\u00e2ncia para ajustes comuns. Para roscas internas: 4G, 5G, 6G, 4H, 5H, 6H, 7H, 8H. Para roscas externas: 4H, 5G\/6G, 6E, 6F, 6G, 6H, 7G\/6G, 8G. Exemplo: 6H\/6G para ajuste com folga de precis\u00e3o m\u00e9dia.<\/p>\n<p style=\"margin: 10px 0;\">Essas zonas facilitam a sele\u00e7\u00e3o de padr\u00f5es, garantindo a compatibilidade nas cadeias de suprimentos globais.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Perguntas frequentes (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 \u00e9 o papel dos desvios fundamentais?<\/strong><br \/>\nEles posicionam a zona de toler\u00e2ncia, determinando o tipo de ajuste: EI positivo para folga interna, es negativo para folga externa.<\/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>Como selecionar o grupo de dura\u00e7\u00e3o do engajamento?<\/strong><br \/>\nEscolha S para curto, N para normal e L para longo, com base na carga e na vibra\u00e7\u00e3o; L oferece maior resist\u00eancia, mas requer toler\u00e2ncias mais rigorosas.<\/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>Por que as toler\u00e2ncias do di\u00e2metro primitivo s\u00e3o cr\u00edticas?<\/strong><br \/>\nEles controlam a \u00e1rea de contato, afetando a distribui\u00e7\u00e3o da carga e a resist\u00eancia \u00e0 fadiga; ranhuras mais apertadas evitam o afrouxamento.<\/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>Qual \u00e9 uma zona de toler\u00e2ncia preferencial, como 6H\/6g?<\/strong><br \/>\nEle combina o grau 6 com desvios H\/g para um ajuste de folga de m\u00e9dia precis\u00e3o, amplamente utilizado em engenharia geral.<\/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>Como as toler\u00e2ncias variam com o passo e o di\u00e2metro?<\/strong><br \/>\nEles aumentam com passos e di\u00e2metros maiores para acomodar os desafios de fabrica\u00e7\u00e3o, mantendo a funcionalidade.<\/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>A norma pode ser aplicada a roscas revestidas?<\/strong><br \/>\nSim, com ajustes; designe, por exemplo, como 6g (antes do revestimento) para ajuste p\u00f3s-revestimento, conforme as diretrizes do anexo.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<hr \/>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Introdu\u00e7\u00e3o \u00e0 Norma GB\/T 197-2018: A norma GB\/T 197-2018 especifica as toler\u00e2ncias para roscas m\u00e9tricas de uso geral, garantindo intercambiabilidade e desempenho em aplica\u00e7\u00f5es mec\u00e2nicas. Esta norma define desvios fundamentais, toler\u00e2ncias de di\u00e2metro, comprimentos de engate e zonas preferenciais para roscas internas e externas, aplic\u00e1veis \u200b\u200ba ind\u00fastrias como a automotiva, aeroespacial e de m\u00e1quinas. As toler\u00e2ncias s\u00e3o categorizadas por graus (3 a 9), com [\u2026]<\/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\/pt\/wp-json\/wp\/v2\/posts\/5751","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/comments?post=5751"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts\/5751\/revisions"}],"predecessor-version":[{"id":5753,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/posts\/5751\/revisions\/5753"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/media?parent=5751"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/categories?post=5751"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/pt\/wp-json\/wp\/v2\/tags?post=5751"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}