常用公制外螺纹极限尺寸
公制螺纹尺寸表
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
公制螺纹尺寸表
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
公制(米制)螺纹极限尺寸
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°。
公制螺纹常用规格极限尺寸表汇编
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
公制外螺纹(6g)公制内螺纹(6H)常用规格极限尺寸表
22.917
23.00
M24×1.5
24.000
23.226
23.026
22.676
22.376
22.50
M24×2
24.000
22.925
22.701
22.210
21.835
22.00
M27×1
27.000
26.520
26.350
26.153
25.917
26.00
M27×1.5
27.000
21.95
M27×3
26.952
26.577
25.003
24.803
23.704
24.89
24.95
1.螺胚直径指滚丝前的尺寸，数值为依经验公式计算而得，在实践中需验证。
公制外螺纹(6g)常用规格极限尺寸表(细牙)
公称直径×螺距
螺纹精度等级
大径
中径
小径
螺胚直径
最大
最小
最大
最小
最大
最小
最大
M3X0.35
4.675
4.599
4.459
4.50
M6×0.75
6.000
5.645
5.513
5.378
5.188
5.20
M8×0.75
8.000
7.645
7.513
7.378
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
常用公制内外螺纹极限直径表
16.676
M20×2.5 φ17.5 M20×1.5 φ18.5 M22×2.5 φ19.5 M24×3 M27×3 φ21 φ24
17.294 ～ 17.744 18.376 ～ 18.676
17.23 φ17.31 φ18.57～ φ18.63～ 18.67 φ18.78 φ19.17～ φ19.22～ 19.23 φ19.31
M20×1 19.974 19.794 19.324 19.206 18.891 19.24 19.29 M20×1.5 19.968 19.732 18.994 18.854 18.344 18.90 18.95 M20×2 19.962 19.682 18.663 18.503 17.797 18.57 18.62 M22×1 21.974 21.794 21.324 21.206 20.891 21.24 21.29 M22×1.5 21.968 21.732 20.994 20.854 20.344 20.95 20.90 M22×2 21.962 21.682 20.663 20.503 19.797 20.57 20.62 M24×1 23.974 23.794 23.324 23.199 22.891 23.23 23.29 M24×1.5 23.968 23.732 22.994 22.844 22.344 22.89 22.95 M24×2 23.962 23.682 22.663 22.493 21.797 22.57 22.62 M27×1 26.974 26.794 26.324 26.199 25.891 26.23 26.29 M27×1.5 26.968 26.732 25.944 25.844 25.344 25.89 25.95 M27×2 26.962 26.682 25.663 25.493 24.797 25.56 25.62 1.螺胚直径指滚丝前的尺寸，数值为依经验公式计算而得，在实践中 需验证。
公制内外螺纹极限尺寸
30 15 45 30 27.727 28.007 26.211 26.771
6g粗牙外螺纹极限尺寸
公称直
螺纹旋合长 度
径M 从 到
大径 max min
中径 max min
3 1.5 4.5 2.980 2.874 2.655 2.580
3.5 1.7 5 3.479 3.354 3.089 3.004
22×2 8 24 22 20.701 20.913 19.835 20.210
24×2 8.5 25 24 22.701 22.925 21.835 22.210
27×2 8.5 25 27 25.701 25.925 24.835 25.210
30×2 8.5 25 30 28.701 28.925 27.835 28.210.
30 15 45 9.947 29.277 27.674 27.339
小径
max min
3.995 3.787 4.747 4.495
5.747 5.495 6.438 6.158
8.128 7.808
9.819 9.457
11.508 11.114
13.508 13.114
14.891 14.446
5
2.5 7.5 5
4.480 4..605 4.134 4.334
6
396
5.350 5.500 4.917 5.153
7
397
6.350 6.500 5.917 6.153
8
4 12 8
7.188 7.348 6.647 6.912
10
5 15 10 9.026 9.206 8.376 8.676
12
6 18 12 10.863 11.063 10.106 10.441
常用公制内外螺纹极限直径表
9.153
8.917
M10x0.75
9.3
9.378
9.188
M10x05
9.5
9.52
9.4
M11X10
10
10.153
9.917
M11x075
10.3
10378
10.188
M11X1.5
10.5
10.676
10.376
M12X1.25
10.8
10.912
10.647
7.391
7.166
7.42
7.46
M8×1
7.974
7.794
7.324
7.212
6.891
7.26
7.29
M10×0.75
9.978
9.838
9.491
9.391
9.166
9.42
9.46
M10×1
9.974
9.794
9.324
9.212
8.891
9.26
9.29
M10×1.25
9.972
9.760
10.91
10.95
M14×1
13.974
13.794
13.324
13.206
12.891
13.25
13.29
M14×1.5
13.968
13.732
12.994
12.854
12.344
12.91
12.95
M16×1
15.974
15.794
15.324
15.206
14.891
15.25
15.29
M16×1.5
公制内外螺纹极限尺寸
6g细牙外螺纹极限尺寸
螺纹旋合长 公称直 度 径 M 从 到 8×1 10×1 10×1.25 12×1.25 12×1.5 14×1.5 16×1.5 18×1.5 18×2 20×1.5 20×2 22×1.5 22×2 24×2 27×2 30×2 3 3 4 4.5 5.6 5.6 5.6 5.6 8 5.6 8 5.6 8 8.5 8.5 8.5 9 9 12 13 16 16 16 16 24 16 24 16 24 25 25 25 大径 max 7.974 9.974 9.972 11.972 11.968 13.968 15.968 17.968 17.962 19.968 19.962 21.968 21.962 23.962 26.962 29.962 min 7.794 9.794 9.760 11.760 11.732 13.732 15.732 17.732 17.682 19.732 19.682 21.732 21.682 23.682 26.682 29.682 max 7.324 9.324 9.160 11.160 10.994 12.994 14.994 16.994 16.663 18.994 18.663 20.994 20.663 22.663 25.663 28.663 中径 min 7.212 9.212 9.042 11.028 10.854 12.854 14.854 16.854 16.503 18.854 18.503 20.854 20.503 22.493 25.483 28.493 max 6.747 8.747 8.438 10.438 10.128 12.128 14.128 16.128 15.508 18.128 17.508 20.128 19.508 21.508 24.508 27.508 小径 min 6.563 8.563 8.230 10.216 9.880 11.880 13.880 15.880 15.204 17.880 17.204 19.880 19.204 21.194 24.194 27.194