普通螺纹公差.pdf

表1-1表1-1 内外螺纹的基本偏差 内外螺纹的基本偏差 单位（m）单位（m） 螺距螺距 P(mm)P(mm) 基本偏差 内螺纹D 基本偏差 内螺纹D2 2、D、D1 1外螺纹d、d外螺纹d、d2 2 GHefgh EIEIeseseses GHefgh EIEIeseseses 0.20.2+170-170+170-170 0.250.25+180-180+180-180 0.30.3+180-180+180-180 0.350.35+190-34-190+190-34-190 0.40.4+190-34-190+190-34-190 0.450.45+200-35-200+200-35-200 0.50.5+200-50-36-200+200-50-36-200 0.60.6+210-53-36-210+210-53-36-210 0.70.7+220-56-38-220+220-56-38-220 0.750.75+220-56-38-220+220-56-38-220 0.80.8+240-60-38-240+240-60-38-240 1 1+260-60-40-260+260-60-40-260 1.251.25+280-63-42-280+280-63-42-280 1.51.5+320-67-45-320+320-67-45-320 1.751.75+340-71-48-340+340-71-48-340 2 2+380-71-52-380+380-71-52-380 2.52.5+420-80-58+420-80-58-420-420 3 3+480-85-63-480+480-85-63-480 3.53.5+530-90-70-380+530-90-70-380 4 4+600-95-75-420+600-95-75-420 4.54.5+630-100-80-480+630-100-80-480 5 5+710-106-85-710+710-106-85-710 5.55.5+750-112-90-750+750-112-90-750 6 6+800-118-95-800+800-118-95-800 表1-2表1-2 内螺纹小径公差( 内螺纹小径公差(T TD1 D1) ) 单位（m）单位（m） 螺距螺距 P(mm)P(mm) 公差等级 螺距 公差等级 螺距 P(mm)P(mm) 公差等级 4567845678 公差等级 4567845678 0.20.2384838481.251.25170212265335425170212265335425 0.250.254556714556711.51.5190236300375474190236300375474 0.30.35367855367851.751.75212265335425586212265335425586 0.350.35638010063801002 2236300375475600236300375475600 0.40.4719011271901122.52.5280355450560710280355450560710 0.450.4580100125801001253 3315400500630800315400500630800 0.50.590112140180901121401803.53.5355450560710900355450560710900 0.60.61001251602001001251602004 4375475600750950375475600750950 0.70.71121401802241121401802244.54.542553067085010604255306708501060 0.750.751181501902361181501902365 545056071090045056071090011201120 0.80.81251602002503151251602002503155.55.547560075095011804756007509501180 1 11501902363003751501902363003756 65006308001000125050063080010001250 45452222 4 4 表1-3表1-3 内螺纹中径公差( 内螺纹中径公差(T TD2 D2) ) 单位（m）单位（m） 公称直径公称直径 螺距螺距 P(mm)P(mm) 公 差 等 级公 差 等 级 D（mm）D（mm） 45678 0.991.4 45678 0.991.4 0.20.24040 0.250.2545564556 0.30.3486075 1.42.8 486075 1.42.8 0.20.24242 0.250.2548604860 0.350.35536785536785 0.40.4567190567190 0.450.45607595 2.85.6 607595 2.85.6 0.350.35567190567190 0.50.563831001256383100125 0.60.671901121407190112140 0.70.775951181507595118150 0.750.7575951181507595118150 0.80.880100125160200 5.611.2 80100125160200 5.611.2 0.50.571901121407190112140 0.750.758510613217085106132170 1 19511815019023695118150190236 1.251.25100125160200250100125160200250 1.51.5112140180224280112140180224280 11.222.411.222.4 0.50.575951181507595118150 0.750.759011214018090112140180 1 1100125160200250100125160200250 1.251.25112140180224280112140180224280 1.51.5118150190236300118150190236300 1.751.75125160200250315125160200250315 2 2132170212265335132170212265335 2.52.5140180224280355140180224280355 0.750.759511815019095118150190 1 1106132170212106132170212 1.51.5125160200250315125160200250315 2 2140180224280355140180224280355 2222. .4 44545 3 3170212265335425170212265335425 3.53.5180224280355450180224280355450 4 4190236300375475190236300375475 4.54.5200250315400500 4590 200250315400500 4590 1 1118150180236118150180236 1.51.5132170212265335132170212265335 2 2150190236300375150190236300375 3 3180224280355450180224280355450 4 4200250315400500200250315400500 5 5212265335425530212265335425530 5.55.5224280355450560224280355450560 6 6236300375475600 90180 236300375475600 90180 1.51.5140180224280355140180224280355 2 2160200250315400160200250315400 3 3190236300375475190236300375475 4 4212265335425530212265335425530 6 6250315400500630 180355 250315400500630 180355 2 2180224280355450180224280355450 3 3212265335425530212265335425530 4 4236300375475600236300375475600 6 6265335425530670265335425530670 表1-4表1-4 外螺纹大径公差( 外螺纹大径公差(T Td d) ) 单位（m）单位（m） 螺距螺距 P(mm)P(mm) 公差等级 螺距 公差等级 螺距 P(mm)P(mm) 公差等级 468468 公差等级 468468 0.20.2365636561.251.25132212335132212335 0.250.25426742671.51.5150236375150236375 0.30.3487548751.751.75170265425170265425 0.350.35538553852 2180280450180280450 0.40.4609560952.52.5212335530212335530 0.450.4563100631003 3236375600236375600 0.50.567106671063.53.5265425679265425679 0.60.680125801254 4300475750300475750 0.70.790140901404.54.5315500800315500800 0.750.7590140901405 5335530850335530850 0.80.895150236951502365.55.5355560900355560900 1 11121802801121802806 6375600950375600950 2222 4 44545 表1-5 表1-5 外螺纹中径公差( 外螺纹中径公差(T Td2 d2) ) 单位（单位（ 公称直径公称直径 螺距螺距 P(mm)P(mm) 公 差 等 级公 差 等 级 D（mm）D（mm） 345678 0.991.4 345678 0.991.4 0.20.22430384824303848 0.250.252634425326344253 0.30.328364556 1.42.8 28364556 1.42.8 0.20.22532405025324050 0.250.252836455628364556 0.350.3532405063803240506380 0.40.434425367853442536785 0.450.453645567190 2.85.6 3645567190 2.85.6 0.350.3534425367853442536785 0.50.538486075953848607595 0.60.64253678510642536785106 0.70.74556719011245567190112 0.750.754556719011245567190112 0.80.848607595118150 5.611.2 48607595118150 5.611.2 0.50.54253678510642536785106 0.750.75506380100125506380100125 1 1567190112140180567190112140180 1.251.25607595118150190607595118150190 1.51.56785106132170212 11.222.4 6785106132170212 11.222.4 0.50.54556719011245567190112 0.750.75536785106132536785106132 1 1607595118150190607595118150190 1.251.2567851061321702126785106132170212 1.51.571901121401802247190112140180224 1.751.7575951181501902367595118150190236 2 28010012516020025080100125160200250 2.52.58510613217021226585106132170212265 0.750.75567190112140567190112140 1 163801001251602006380100125160200 1.51.575951181501902367595118150190236 2 28510613217021226585106132170212265 2222. .4 44545 3 3100125160200250315100125160200250315 3.53.5106132170212265335106132170212265335 4 4112140180224280355112140180224280355 4.54.5118150190236300375 4590 118150190236300375 4590 1 171901121401802247190112140180224 1.51.58010012516020025080100125160200250 2 29011214018022428090112140180224280 3 3106132170212265335106132170212265335 4 4118150190236300375118150190236300375 5 5125160200250315400125160200250315400 5.55.5132170212265335425132170212265335425 6 6140180224280355450 90180 140180224280355450 90180 1.51.58510613217021226585106132170212265 2 29511815019023630095118150190236300 3 3112140180224280355112140180224280355 4 4125160200250315400125160200250315400 6 6150190236300375475 180355 150190236300375475 180355 2 2106132170212265335106132170212265335 3 3125125160200250315400160200250315400 4 4140180224280355450140180224280355450 6 6160200250315400500160200250315400500 m）m） 表1-6表1-6 螺纹的旋合长度 螺纹的旋合长度 单位（mm）单位（mm） 公称直径公称直径 螺距螺距 P(mm)P(mm) 旋合长度旋合长度 D、d（mm）D、d（mm）S短N中等L长S短N中等L长 99 5.611.2 5.611.2 0.50.51.61.64.74.7 1.61.64.74.7 0.750.752.42.47.17.1 2.42.47.17.1 1 13399 3399 1.251.25441212 441212 1.51.5551515 11.222.4 551515 11.222.4 0.50.51.81.85.45.4 1.81.85.45.4 0.750.752.72.78.18.1 2.72.78.18.1 1 13.83.81111 1.254.54.51313 1.55.65.61616 1.75661818 2882424 2.510103030 190 22.445.0 0.753.13.19.49.4 1441212 1.56.36.31919 22428.58.52525 236312123636 2653.51515 3.83.81111 1.254.54.51313 1.55.65.61616 1.75661818 2882424 2.510103030 190 22.445.0 0.753.13.19.49.4 1441212 1.56.36.31919 22428.58.52525 236312123636 2653.515154545 418185353 4.521216363 236 一般不标旋合长度 ，表示中等 ；必要时标注其代号， 如M10-5g6g-S ；特殊需要时可标注数值 ， 例： M10- 7g6g-30。 265 280 300 315 335 250 300 335 4545 418185353 4.521216363 236 一般不标旋合长度 ，表示中等 ；必要时标注其代号， 如M10-5g6g-S ；特殊需要时可标注数值 ， 例： M10- 7g6g-30。 265 280 300 315 335 250 300 335 400 425 450 475 315 355 425 475 500 530 560 335 375 450 500 600 425 500 560 630 400 425 450 475 315 355 425 475 500 530 560 335 375 450 500 600 425 500 560 630 ) ) 表1-7表1-7 公 差 带 的 选 用 内螺纹选用公差带 公 差 带 的 选 用 内螺纹选用公差带 精度 公差带位置 精度 公差带位置 G G公差带位置 公差带位置 H H SNLSNL 精密4H4H5H5H6H 中等 SNLSNL 精密4H4H5H5H6H 中等( (5G5G)()(6G6G)()(7G7G* *5H5H6H6H* *7H 粗糙7H 7H 粗糙7H 外螺纹选用公差带外螺纹选用公差带 精度 公差带位置 精度 公差带位置 e e公差带位置 公差带位置 f f SNLSNL 精密 中等 SNLSNL 精密 中等* *6 6e e* *6 6f f 粗糙 精度 公差带位置 粗糙 精度 公差带位置 g g公差带位置 公差带位置 h h SNLSNL 精密 SNLSNL 精密( (3h4h3h4h) )* *4h4h( (5h4h5h4h) ) 中等中等( (5g5f5g5f) )6g6g( (7g6g7g6g)()(5h6h5h6h) )* *6h6h( (7h6h7h6h) ) 粗糙粗糙( (8h8h) ) 注解：注解： ： ：推荐选用 推荐选用 * *：优先选用 ：优先选用 （）（）：尽量不选用 内外螺纹的选用公差带可任意组合，推荐选用H/g、H/h、G/h 组合。 ：尽量不选用 内外螺纹的选用公差带可任意组合，推荐选用H/g、H/h、G/h 组合。