常用公制外螺纹极限尺寸

8.376 8.50 10.106 10.20 11.835 12.00 13.835 14.00 15.294 15.50 17.294 17.50 19.294 19.50 20.752 21.00 23.752 24.00
公制 外螺 纹 （6g ）常 用规 格极 限尺 寸表 （细 牙）
公称直径× 螺纹精 螺距 度等级
M3X0.35 M4X0.5 M5×0.5 M6×0.75 M8×0.75 M8×1 M10×0.75 M10×1 M10×1.25 M12×1 M12×1.25
大径
最大
最小
2.981 2.896
3.980 3.874
4.980 4.874
5.978 5.838
7.978 7.838
7.974 7.794
11.968 13.974 13.968 15.974 15.968 17.974 17.968 17.962 19.974 19.968 19.962 21.974 21.968 21.962 23.974 23.968 23.962 26.974 26.968 26.962
11.732 13.794 13.732 15.794 15.732 17.794 17.732 17.682 19.794 19.732 19.682 21.794 21.732 21.682 23.794 23.732 23.682 26.794 26.732 26.682
25.520 23.350

26.520 26.350
小径
攻丝前
钻头直
最大
最小
径
2.721 2.621 2.65
3.559 3.459 3.50
4.599 4.459 4.50

14.676 14.376 14.50
17.153 16.917 17.00
16.676 16.376 16.50
16.210 15.835 16.00
19.153 18.917 19.00
18.676 18.376 18.50
18.210 17.835 18.00
21.153 20.917 21.00
13.216 13.026
15.510 15.350
15.216 15.026
17.510 17.350
17.216 17.026
16.913 16.701
19.510 19.350
19.216 19.026
18.913 18.701
21.510 21.350
21.216 21.026
20.913 20.701
9.378 9.188 9.20
9.153 8.917 9.00
8.912 8.647 8.80
11.153 10.917 11.00
10.912 10.647 10.80
10.676 10.376 10.50
13.153 12.917 13.00
12.676 12.376 12.50
15.153 14.917 15.00
10.95 13.29 12.95 15.29 14.95 17.29 16.95 16.62 19.29 18.95 18.62 21.29 20.90 20.62 23.29 22.95 22.62 26.29 25.95 25.62
公制 内螺 纹 （6H ）常 用规 格极 限尺 寸表 （细 牙）
大径
最小
3.000 4.000 5.000 6.000 8.000 8.000 10.000 10.000 10.000 12.000 12.000 12.000 14.000 14.000 16.000 16.000 18.000 18.000 18.000 20.000 20.000 20.000 22.000 22.000 22.000 24.000 24.000 24.000 27.000

毛坯极限尺寸参考大径尺寸（非挤压加工）；螺纹山角度：60°涂色部螺距为非常用规格；螺纹山角度：60°。

单位：mm 小径大 径d maxd min 公差d 2max d 2min 公差d 3maxD minD 2max D 2min 公差D 1max D 1min 公差0.20.9830.9270.0560.8530.8050.0480.7380.2510.9330.0670.8380.7850.0530.67510.830.740.09-0.7290.750.2 1.083 1.0270.0560.9530.9050.0480.8380.25 1.1 1.0330.0670.9380.8850.0530.775 1.10.930.840.09-0.8290.850.2 1.183 1.1270.056 1.053 1.0050.0480.9380.25 1.2 1.1330.067 1.0380.9850.0530.875 1.2 1.0030.9080.095-0.9290.950.2 1.383 1.3270.056 1.253 1.2050.048 1.1380.3 1.4 1.3250.075 1.205 1.1490.056 1.014 1.4 1.28 1.2050.075 1.16 1.0750.085 1.10.2 1.583 1.5270.056 1.453 1.4030.05 1.3380.35 1.581 1.4960.085 1.354 1.2910.063 1.152 1.6 1.458 1.3730.085 1.321 1.2210.1 1.250.2 1.783 1.7270.056 1.653 1.6030.05 1.5230.35 1.781 1.6960.085 1.554 1.4910.063 1.352 1.8 1.658 1.5730.085 1.521 1.4210.1 1.450.25 1.982 1.9150.067 1.82 1.7640.056 1.6750.4 1.981 1.8860.095 1.721 1.6540.067 1.492 1.83 1.740.09 1.679 1.5670.112 1.60.25 2.182 2.1150.067 2.02 1.9640.056 1.8750.45 2.18 2.080.1 1.888 1.8170.071 1.628 2.2 2.003 1.9080.095 1.838 1.7130.125 1.750.35 2.481 2.3960.085 2.254 2.1910.063 2.052 2.5 2.358 2.2730.085 2.221 2.1210.1 2.150.45 2.48 2.380.1 2.188 2.1170.071 1.928 2.5 2.303 2.2080.095 2.138 2.0130.125 2.050.35 2.981 2.8960.085 2.754 2.6870.067 2.5523 2.863 2.7730.09 2.721 2.6210.1 2.650.5 2.98 2.8740.106 2.655 2.580.075 2.3673 2.775 2.6750.1 2.599 2.4590.14 2.50.35 3.481 3.3960.085 3.254 3.1870.067 3.052 3.5 3.363 3.2730.09 3.221 3.1210.1 3.150.6 3.479 3.3540.125 3.089 3.0040.085 2.743 3.5 3.222 3.110.112 3.01 2.850.16 2.90.5 3.98 3.8740.106 3.655 3.580.075 3.3674 3.775 3.6750.1 3.599 3.4590.14 3.50.7 3.978 3.8380.14 3.523 3.4330.09 3.1194 3.663 3.5450.118 3.422 3.2420.18 3.30.5 4.448 4.3740.074 4.155 4.080.075 3.867 4.5 4.275 4.1750.1 4.099 3.9590.1440.75 4.478 4.3380.14 3.991 3.9010.09 3.558 4.5 4.131 4.0130.118 3.878 3.6880.19 3.70.5 4.98 4.8740.106 4.655 4.580.075 4.3675 4.775 4.6750.1 4.599 4.4590.14 4.50.8 4.976 4.8260.15 4.456 4.3610.095 3.9955 4.605 4.480.125 4.334 4.1340.2 4.25.50.5(细牙） 5.48 5.3740.106 5.155 5.080.075 4.867 5.5 5.275 5.1750.1 5.099 4.9590.1450.755.978 5.8380.14 5.491 5.3910.1 5.0586 5.645 5.5130.132 5.378 5.1880.19 5.21 5.974 5.7940.18 5.324 5.2120.112 4.7476 5.5 5.350.15 5.153 4.9170.23650.756.978 6.8380.14 6.491 6.3910.1 6.0587 6.645 6.5130.132 6.378 6.1880.19 6.21 6.974 6.7940.18 6.324 6.2120.112 5.7477 6.5 6.350.15 6.153 5.9170.23660.757.9787.8380.147.4917.3910.17.05887.6457.5130.1327.3787.1880.197.2817.9747.7940.187.3247.2120.1126.74787.57.53-0.037.1536.9170.2367公称直径 d螺距 P1.61.822.211.11.21.4672.533.54大径中径中径小径钻头径4.55毛坯极限尺寸参考大径尺寸（非挤压加工）；螺纹山角度：60°涂色部螺距为非常用规格；螺纹山角度：60°。

M6×0.75 M8×0.75
6.000 8.000
5.645 7.645
5.513 5.378 7.513 7.378
5.188 5.20 7.188 7.20
M8×1
8.000 7.500 7.350 7.153 6.917 7.00
M10×0.75
10.000 9.645 9.513 9.378 9.188 9.20
公制内螺纹6h常用规格极限尺寸表细牙公称直径螺距螺纹精度等级攻丝前钻头直径m1216h12000115101135011153109171100m1212512000113681118810912106471080m121512000112161102610676103761050m14114000135101335013153129171300m141514000132161302612676123761250m16116000155101535015153149171500m161516000152161502614676143761450m18118000175101735017153169171700m181518000172161702616676163761650m18218000169131670116210158351600m20120000195101935019153189171900m201520000192161902618676183761850m20220000189131870118210178351800m22122000215102135021153209172100m221522000212162102620676203762050m22222000209132070120210198352000m24124000255202335023153229172300m241524000232262302622676223762250m24224000229252270122210218352200m27127000265202635026153259172600m271527000262262602625676253762550m27227000259252570125210248352500小径最小最大最小最大最小m3056h30002775267525992459250m40740003663354534223242330m50850004605448043344134420m6160005500535051534917500m812580007348718869126647680m1015100009206902686768376850m1217512000110631086310441101061020m14214000129131270112210118351200m16