螺杆螺母对照表
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2023年2月25日发(作者：详细设计说明书)六角螺母
六角螺母—C级I型六角螺母—A和B级六角薄螺母
（GB/T41-2000）(GB/T6170-2000)(GB/T6172.1-2000)
标记示例
螺纹规格D=M12、性能级别为5级、不经表面处理、C级的六角螺母：螺母GB/T41-2000M12
螺纹规格D=M12、性能级别为8级、不经表面处理、A级的I型六角螺母：螺母GB/T6170-2000M12mm
注：A级用于D≤16，B级用于D＞16
1.各部位的尺寸
螺纹规格D
M3M4M5M6M8M10M12M16M20M24M30M36M42
e
GB/T418.6310.8914.2017.5919.8526.1732.9539.5550.8560.7972.07
GB/T61706.017.668.7911.0514.3817.7720.0326.7532.9539.5550.8560.7972.02
GB/T6172.16.017.668.7911.0514.3817.7720.0326.7532.9539.5550.8560.7972.02
s
GB/T41816465565
GB/T61705.57816465565
GB/T6172.15.57816465565
m
GB/T415.66.17.99.512.215.918.722.325.431.534.9
GB/T61702.43.24.75.26.88.410.814.81821.525.63134
GB/T6172.11.82.22.73.245681012151821
单位：mm
螺纹的公称直径(d)(2)M3M4M5M6M8M10M12(M14)
螺栓的螺距(P)
0.50.70.811.251.51.752
b
参考
1820
dk
最大(基准尺寸)*5.578.51013161821
最大**5.687.228.7210.2213.2716.2718.2721.33
最小
5.326.788.289.7812.7315.7317.7320.67
da
最大
3.64.75.76.89.211.213.715.7
ds
最大(基准尺寸)
34568101214
最小
2.863.824.825.827.789.7811.7313.73
e
最小
2.873.444.585.726.869.1511.4313.72
f
最大
0.510.600.600.681.021.021.451.45
k
最大(基准尺寸)
34568101214
最小
2.863.824.825.707.649.6411.5713.57
r
最小
0.10.20.20.250.40.40.60.6
s
公称(基准尺寸)
2.5345681012
最小
2.523.024.025.026.028.02510.02512.032
最大(1)
1栏
2.5803.0804.0955.1406.1408.17510.17512.212
2栏
2.5603.0804.0955.0956.0958.11510.11512.142
t
最小
1.322.534567
v
最大
0.30.40.50.60.811.21.4
dw
最小
5.076.538.039.3812.3315.3317.2320.17
w
最小
1.151.41.92.33.344.85.8
螺纹的公称直径(d)(2)M16(M18)M20(M22)M24(M27)M30
螺栓的螺距(P)
22.52.52.5333.5
b
参考
44485256606672
dk
最大(基准尺寸)*24273033364045
最大**24.3327.3330.3333.3936.3940.3945.39
最小
23.6726.6729.6732.6135.6139.6144.61
da
最大
17.720.222.424.426.430.433.4
ds
最大(基准尺寸)
730
最小
15.7317.7319.6721.6723.6726.6729.67
e
最小
16.0016.0019.4419.4421.7321.7325.15
f
最大
1.451.872.042.042.042.892.89
k
最大(基准尺寸)
730
最小
15.5717.5719.4821.4823.4826.4829.48
r
最小
0.60.60.80.80.811
s
公称(基准尺寸)
922
最小
14.03214.03217.05017.05019.06519.06522.065
最大(1)
1栏
14.21214.21217.23017.23019.27519.27522.275
2栏
14.14214.142
t
最小
8910111213.515.5
v
最大
1.61.822.22.42.73
dw
最小
23.1725.8728.8731.8134.8138.6143.61
w
最小
6.87.78.69.510.412.113.1
注(1)：s(最大)的1栏适用于强度8.8及10.9及性状A2-50、A2-70的内容，2栏适用于强度12.9的内容。但根据双方当事人之间协议，强度
12.9的内容也可以适用1栏。
螺纹的公称直径M20以上的s(最大)适用于所有的强度及性状内容。
注(2)：螺纹的公称直径中带括号的尽量不要使用。
备注：1.头部的侧面带有直纹或网纹[参照JISB0951(滚花)]。此时，dk(最大)为该表中的带**的数值。
此外，需要没有滚花的货时，订货人必须指定。但该dk(最大)为该表中带*的数值。
2.对于螺纹的公称直径建议使用的公称长度(ℓ)为粗线框内的内容。
如果ℓ比虚线位置短的为全螺纹，杆部的不完全螺纹长度约为3P。
3.公称长度(ℓ)比虚线位置长的话，ℓg(最大)及ℓs(最小)根据下式决定。
ℓg(最大)=公称长度(ℓ)-b
ℓs(最小)=ℓg(最大)-5P
2.内六角螺栓的L和ℓs及ℓg
单位：mm
螺纹的公称直径(d)
M3M4M5M6M8
L
ℓsmin.及ℓgmax.
公称长度
minmax
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
54.765.24
65.766.24
87.718.29
109.7110.29
1211.6512.35
1615.6516.35
2019.5820.42
2524.5825.424.57
3029.5830.429.5126.51048
3534.535.511.515913611
4039.540.516.52.7512
4544.545.51923162110.7517
5049.550.52428212615.7522
5554.455.6263120.7527
6059.460.6313625.7532
6564.465.630.7537
7069.470.635.7542
8079.480.645.7552
9089.390.7
10099.3100.7
110109.3110.7
120119.3120.7
130129.2130.8
140139.2140.8
150149.2150.8
160159.2160.8
180179.2180.8
200199.05200.95
220219.05220.95
240239.05240.95
260258.95261.05
280278.95281.05
300298.95301.05
螺纹的公称直径(d)
M10M12(M14)M16(M18)
L
ℓsmin.及ℓgmax.
公称长度
minmax
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
54.765.24
65.766.24
87.718.29
109.7110.29
1211.6512.35
1615.6516.35
2019.5820.42
2524.5825.42
3029.5830.42
3534.535.5
4039.540.5
4544.545.55.513
5049.550.510.518
5554.455.615.52310.2519
6059.460.620.52815.25241020
6564.465.625.53320.2529152511214.517
7069.470.630.53825.2534203016269.522
8079.480.640.54835.25443040263619.532
9089.390.750.55845.25544050364629.542
10099.3100.760.56855.25645060465639.552
110109.3110.766.25746070566649.562
120119.3120.775.25847080667659.572
130129.2130.88090768669.582
140139.2140.89.592
150149.2150.89610689.5102
160159.2160.810611699.5112
180179.2180.8119.5132
200199.05200.95
220219.05220.95
240239.05240.95
260258.95261.05
280278.95281.05
300298.95301.05
螺纹的公称直径(d)
M20(M22)M24(M27)M30
L
ℓsmin.及ℓgmax.
公称长度
minmax
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
ℓs
min
ℓg
max
54.765.24
65.766.24
87.718.29
109.7110.29
1211.6512.35
1615.6516.35
2019.5820.42
2524.5825.42
3029.5830.42
3534.535.5
4039.540.5
4544.545.5
5049.550.5
5554.455.6
6059.460.6
6564.465.6
7069.470.6
8079.480.615.52811.524
9089.390.725.53821.5341530924
10099.3100.735.54831.54425401934
110109.3110.745.55841.5543550294420.538
120119.3120.755.56851.5644560395430.548
130129.2130.865.57861.5745570496440.558
140139.2140.875.58871.5846580597450.568
150149.2150.885.59881.5947590698460.578
160159.2160.895.510891.510.588
180179.2180.8115.5128111.51241.5108
200199.05200.95135.5148131.514412514.5128
220219.05220.95139154130.5148
240239.05240.95159174150.5168
260258.95261..5188
280278.95281..5208
300298.95301..5228
参考：内六角螺栓的沉头孔及螺栓孔的尺寸
单位：mm
螺纹
的公称
直径
(d)
M3M4M5M6M8M10M12M14M16M18M20M22M24M27M30
ds3456812242730
d́´3.44.55.56.69111416182
dk5.578.55
D´6.589.5111417.5294348
k3456812242730
H́´2.73.64.65.57.49.21112.814.516.518.520.522.52528
H́´´3.34.45.46.58.610.81315.217.519.521.523.525.52932
d22.63.44.35.16.98.610.412.214.215.717.719.721.224.226.7