0000-螺纹尺寸-公差等级计算公式表格文件下载.xls

0000-螺纹尺寸-公差等级计算公式表格文件下载.xls

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2、项目2中的es和项目3中的Td2，TD2需要查表得到。

3、外螺纹极限尺寸计算公式：

4、内螺纹极限尺寸计算公式：

dmax=d+esDmin=D+EIdmin=dmax-TdD2min=Dmin-3/4Hd2max=dmax-3/4H=Dmin-3/40.866025404P=dmax-3/40.866025404PD2max=D2min+TD2d2min=d2max-Td2D1min=Dmin-5/4Hd3max=dmax-1.226869P=Dmin-5/40.866025404PD1max=D1min+TD1内内螺螺纹纹极极限限尺尺寸寸计计算算公公式式螺距0.5公称直径3EI（查表）0TD1（查表）0.14TD2（查表）0.1D1max2.599D1min2.459D2max2.775D2min2.675Dmin（=D+EI）3.000螺螺纹纹中中径径极极限限尺尺寸寸计计算算公公式式4、内螺纹极限尺寸计算公式：

D2min=Dmin-3/4H=Dmin-3/40.866025404PD2max=D2min+TD2D1min=Dmin-5/4H=Dmin-5/40.866025404PD1max=D1min+TD1螺螺纹纹中中径径极极限限尺尺寸寸计计算算公公式式项项目目外外螺螺纹纹中中径径极极限限尺尺寸寸计计算算公公式式内内螺螺纹纹中中径径极极限限尺尺寸寸计计算算公公式式1螺距螺距32dmax（查表=d+es）螺纹直径323Td2（查表）TD2（查表）0.2654外螺纹中径最大值0.000内螺纹中径最大值30.3165外螺纹中径最小值0.000内螺纹中径最小值30.051注：

dmax=d+esDmin=D+EIdmin=dmax-TdD2min=Dmin-3/4Hd2max=dmax-3/4H=Dmin-3/40.866025404P=dmax-3/40.866025404PD2max=D2min+TD2d2min=d2max-Td2D1min=Dmin-5/4Hd3max=dmax-1.226869P=Dmin-5/40.866025404PD1max=D1min+TD1D1、d1基本尺寸表表1-11-1内内外外螺螺纹纹的的基基本本偏偏差差单单位位（mm）表表1-21-2内内螺螺纹纹小小径径公公差差（TTD1D1）单单位位（mm）螺螺距距P（mm）P（mm）基基本本偏偏差差螺螺距距P（mm）P（mm）内内螺螺纹纹DD22、DD11外外螺螺纹纹dd、dd22GGHHeeffgghh0.20.2EIEIEIEIeseseseseseseses0.250.250.20.2+17+1700-17-17000.30.30.250.25+18+1800-18-18000.350.350.30.3+18+1800-18-18000.40.40.350.35+19+1900-34-34-19-19000.450.450.40.4+19+1900-34-34-19-19000.50.50.450.45+20+2000-35-35-20-20000.60.60.50.5+20+2000-50-50-36-36-20-20000.70.70.60.6+21+2100-53-53-36-36-21-21000.750.750.70.7+22+2200-56-56-38-38-22-22000.80.80.750.75+22+2200-56-56-38-38-22-2200110.80.8+24+2400-60-60-38-38-24-240011+26+2600-60-60-40-40-26-26001.251.25+28+2800-63-63-42-42-28-28001.51.5+32+3200-67-67-45-45-32-32001.751.75+34+3400-71-71-48-48-34-340022+38+3800-71-71-52-52-38-38002.52.5+42+4200-80-80-58-58-42-420033+48+4800-85-85-63-63-48-48003.53.5+53+5300-90-90-70-70-38-380044+60+6000-95-95-75-75-42-42004.54.5+63+6300-100-100-80-80-48-480055+71+7100-106-106-85-85-71-71005.55.5+75+7500-112-112-90-90-75-750066+80+8000-118-118-95-95-80-8000公公差差等等级级螺螺距距P（mm）P（mm）公公差差等等级级44556677884455667788383848481.251.251701702122122652653353354254254545565671711.51.51901902362363003003753754744745353676785851.751.752122122652653353354254255865866363808010010022236236300300375375475475600600717190901121122.52.528028035535545045056056071071080801001001251253331531540040050050063063080080090901121121401401801803.53.5355355450450560560710710900900100100125125160160200200443753754754756006007507509509501121121401401801802242244.54.54254255305306706708508501060106011811815015019019023623655450450560560710710900900112011201251251601602002002502503153155.55.547547560060075075095095011801180150150190190236236300300375375665005006306308008001000100012501250表表1-21-2内内螺螺纹纹小小径径公公差差（TTD1D1）单单位位（mm）表表1-31-3内内螺螺纹纹中中径径公公差差（TTD2D2）单单位位（mm）表表1-41-4外外螺螺纹纹大大径径公公差差（TTdd）单单位位（mm）公公称称直直径径螺螺距距P（mm）P（mm）公公差差等等级级螺螺距距P（mm）P（mm）DD（mmmm）44556677880.20.20.990.991.41.40.20.240400.250.250.250.25454556560.30.30.30.34848606075750.350.351.41.42.82.80.20.242420.40.40.250.25484860600.450.450.350.355353676785850.50.50.40.45656717190900.60.60.450.456060757595950.70.72.82.85.65.60.350.355656717190900.750.750.50.5636383831001001251250.80.80.60.671719090112112140140110.70.7757595951181181501500.750.75757595951181181501500.80.880801001001251251601602002005.65.611.211.20.50.5717190901121121401400.750.7585851061061321321701701195951181181501501901902362361.251.251001001251251601602002002502501.51.511211214014018018022422428028011.211.222.422.40.50.5757595951181181501500.750.759090112112140140180180111001001251251601602002002502501.251.251121121401401801802242242802801.51.51181181501501901902362363003001.751.75125125160160200200250250315315221321321701702122122652653353352.52.514014018018022422428028035535522.422.445450.750.759595118118150150190190111061061321321701702122121.51.512512516016020020025025031531522140140180180224224280280355355331701702122122652653353354254253.53.5180180224224280280355355450450441901902362363003003753754754754.54.520020025025031531540040050050045459090111181181501501801802362361.51.5132132170170212212265265335335221501501901902362363003003753753318018022422428028035535545045044200200250250315315400400500500552122122652653353354254255305305.55.52242242802803553554504505605606623623630030037537547547560060090901801801.51.5140140180180224224280280355355221601602002002502503153154004003319019023623630030037537547547544212212265265335335425425530530662502503153154004005005006306301801803553552218018022422428028035535545045033212212265265335335425425530530442362363003003753754754756006006626526533533542542553053067067022.422.44545表表1-51-5外外螺螺纹纹中中径径公公差差（TTd2d2）单单位位（mm）公公差差等等级级螺螺距距P（mm）P（mm）公公差差等等级级公公称称直直径径螺螺距距P（mm）P（mm）446688446688DD（mmmm）363656561.251.25132132212212335335424267671.51.51501502362363753750.990.991.41.40.20.2484875751.751.751701702652654254250.250.2553538585221801802802804504500.30.3606095952.52.52122123353355305301.41.42.82.80.20.26363100100332362363753756006000.250.2567671061063.53.52652654254256796790.350.358080125125443003004754757507500.40.490901401404.54.53153155005008008000.450.459090140140553353355305308508502.82.85.65.60.350.3595951501502362365.55.53553555605609009000.50.5112112180180280280663753756006009509500.60.60.70.70.750.750.80.85.65.611.211.20.50.50.750.75111.251.251.51.511.211.222.422.40.50.50.750.75111.251.251.51.51.751.75222.52.522.422.445450.750.75111.51.5表表1-41-4外外螺螺纹纹大大径径公公差差（TTdd）单单位位（mm）22333.53.5444.54.545459090111.51.5223344555.55.56690901801801.51.5223344661801803553552233446622.422.44545表表1-61-6螺螺纹纹的的旋旋合合长长度度单单位位（mmmm）公公差差等等级级公公称称直直径径DD、dd（mmmm）3344556677889924243030383848485.65.626263434424253532828363645455656252532324040505028283636454556563232404050506363808011.211.234344242535367678585363645455656717190903434424253536767858538384848606075759595424253536767858510610645455656717190901121124545565671719090112112484860607575959511811815015019019022.422.44242535367678585106106505063638080100100125125565671719090112112140140180180224224606075759595118118150150190190236236676785851061061321321701702122122652654545565671719090112112535367678585106106132132606075759595118118150150190190236236一一般般不不标标旋旋合合长长度度，表表示示中中等等；

必必要要时时标标注注其其代代号号，如如M10-5g6g-SM10-5g6g-S；

特特殊殊需需要要时时可可标标注注数数值值，例例：

M10-7g6g-30M10-7g6g-30。

676785851061061321321701702122122652657171909011211214014018018022422428028075759595118118150150190190236236300300808010010012512516016020020025025031531585851061061321321701702122122652653353355656717190901121121401406363808010010012512516016020020025025075759595118118150150190190236236300300表表1-51-5外外螺螺纹纹中中径径公公差差（TTd2d2）单单位位（mm）8585106106132132170170212212265265335335100100125125160160200200250250315315400400106106132132170170212212265265335335425425112112140140180180224224280280355355450450118118150150190190236236300300375375475475717190901121121401401801802242248080100100125125160160200200250250315315909011211214014018018022422428028035535510610613213217017021221226526533533542542511811815015019019023623630030037537547547512512516016020020025025031531540040050050013213217017021221226526533533542542553053014014018018022422428028035535545045056056085851061061321321701702122122652653353359595118118150150190190236236300300375375112112140140180180224224280280355355450450125125160160200200250250315315400400500500150150190190236236300300375375475475600600106106132132170170212212265265335335425425125125160160200200250250315315400400500500140140180180224224280280355355450450560560160160200200250250315315400400500500630630表表1-71-7公公差差带带的的选选用用螺螺距距P（mm）P（mm）旋旋合合长长度度内内螺螺纹纹选选用用公公差差带带SS短短NN中中等等LL长长精精度度公公差差带带位位置置GGSS11.211.20.50.51.61.61.61.64.74.74.74.7精精密密0.750.752.42.42.42.47.17.17.17.1中中等等（5G5G）1133339999粗粗糙糙1.251.254444121212121.51.555551515151522.422.40.50.51.81.81.81.85.45.45.45.4外外螺螺纹纹选选用用公公差差带带0.750.752.72.72.72.78.18.18.18.1精精度度公公差差带带位位置置ee113.83.83.83.811111111SS1.251.254.54.54.54.513131313精精密密1.51.55.65.65.65.616161616中中等等1.751.75666618181818粗粗糙糙228888242424242.52.51010101030303030精精度度公公差差带带位位置置gg45.045.00.750.753.13.13.13.19.49.49.49.4SS11444412121212精精密密1.51.56.36.36.36.319191919中中等等（5g5f5g5f）228.58.58.58.525252525粗粗糙糙331212121236363636注注解解：

推推荐荐选选用用*：

优优先先选选用用（）：

尽尽量量不不选选用用3.53.51515151545454545内内外外螺螺纹纹的的选选用用公公差差带带可可任任意意组组合合，推推荐荐选选用用H/gH/g、H/hH/h、G/hG/h组组合合。

4418181818535353534.54.52121212163636363表表1-61-6螺螺纹纹的的旋旋合合长长度度单单位位（mmmm）公公称称直直径径DD、dd（mmmm）一一般般不不标标旋旋合合长长度度，表表示示中中等等；

公公差差带带位位置置HHNNLLSSNNLL4H4H4H5H4H5H5H6H5H6H（6G6G）（7G7G）*5H5H6H6H*7H7H7H7H公公差差带带位位置置ffNNLLSSNNLL*66ee*66ff公公差差带带位位置置hhNNLLSSNNLL（3h4h3h4h）*4h4h（5h4h5h4h）6g6g（7g6g7g6g）（5h6h5h6h）*6h6h（7h6h7h6h）（8h8h）表表1-71-7公公差差带带的的选选用用内内螺螺纹纹选选用用公公差差带带公公差差带带位位置置GG外外螺螺纹纹选选用用公公差差带带公公差差带带位位置置ee公公差差带带位位置置gg注注解解：

尽尽量量不不选选用用内内外外螺螺纹纹的的选选用用公公差差带带可可任任意意组组合合，推推荐荐选选用用H/gH/g、H/hH/h、G/hG/h组组合合。

普通螺纹（公差）基本常识常用偏差偏差代号（内螺纹）M161.5-6H外螺纹代号为小写字母内螺纹代号为大写字母内螺纹外螺纹上偏差ES上偏差es下偏差EI下偏差ei基本偏差=EI基本偏差=esES=EI+T（公差）ei=es-T（公差）小径公差代号TD1大径公差代号Td中径公差代号TD2中径公差代号Td2小径代号D1小径代号d1中径代号D2中径代号d2大径代号D大径代号d螺距Pd=D=公称直径H（三角形高度）=tan60*p/2=0.866025404P中经d2=D2=d-0.75H=d-0.6495P小经D1=d1=d-1.25H=d-1.0825PM16-5g6g顶径：

指外螺纹大经和内螺纹小径M165g6g中经公差带代号顶径（大经）公差带代号M161.5-6gP=1.5，6g表示大经和中经公差代号相同。

大经偏差为：

es=-0.032,ei=-0.268。

中径偏差为：

es=-0.032,ei=-0.108。

对于内螺纹，未注公差带指的是6H对于外螺纹，未注公差带指的是6g常用偏差公公制制普普通通螺螺纹纹名名义义尺尺寸寸速速查查下面可以迅速查询米制普通螺纹名义的尺寸。

范围按ISO261的第一系列直径，还包括少量第二系列直径。

先选择公称直径，螺距选择会变为相应的范围，而第一个螺距就是粗牙的螺距。

计算公式为：

H（原始三角形高度）=0.