公制外螺纹(6g)常用规格极限尺寸表(细牙)

23.704 24.89 24.95
大径 最小
3.000 4.000 5.000 6.000 8.000
中径
最大
最小
2.775 2.675
3.663 3.545
4.605 4.480
5.500 5.350
7.348 7.188
小径
最大
最小
攻丝前钻头直径
2.599 2.459 2.50
3.422 3.242 3.30
6g
M12×1.5 M14×1 M14×1.5 M16×1 M16×1.5 6g M18×1 M18×1.5 M18×2 M20×1 M20×1.5 M20×2 M22×1 M22×1.5 M22×2 M24×1 M24×1.5 M24×2 M27×1 M27×1.5 M27×2
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。
17.958 17.623
19.958 19.623
21.958 21.623
23.952 23.577
26.952 26.577
中径
最大
最小
2.655 2.580
3.523 3.433
4.456 4.361
5.324 5.212
7.160 7.042
8.994 8.862
10.829 10.679
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

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

常用公制螺纹钻孔底径表
螺纹规格
普通切削丝锥
挤牙丝锥(非圆丝锥)
钻头
直径
孔径
钻头直径
孔径(一级螺纹)
孔径(二级螺纹)
M1×0.25
φ0.75
0.729～0.785
M1.4×0.3
φ1.1
1.075～1.142
φ1.244～1.263
φ1.270～φ1.294
M1.7×0.35
φ1.35
1.321～1.421
最小
最大
最小
最大
最小
最大
M3×0.5
6g
2.980
2.874
2.655
2.580
2.439
2.60
2.63
M4×0.7
3.978
3.838
3.523
3.433
3.220
3.47
3.50
M5×0.8
4.976
4.826
4.456
4.361
4.110
4.40
4.43
M6×1
5.974
5.794
5.324
18.334
18.164
17.252
18.24
18.29
M22×2.5
21.958
21.623
20.334
20.164
19.252
20.24
20.29
M24×3
23.952
23.577
22.003
21.803
20.704
21.89
21.95
M27×3
26.952
26.577
25.003
24.803
23.704

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°。