六角薄螺母（摘自GB/T 6172.1-2000）
螺纹规格为M1.6～M64、性能等级为14H、04、05、A2-035、A2-025、A4-035、A4-025、CU2、CU3和AL4级、产品等级为A和B级的六角薄螺母。
A级用于D≤16mm；B级用于D＞16mm的螺母。
标记示例：
螺纹规格D＝M12、性能等级为04级、不经表面处理、产品等级为A级的六角薄螺母的标记：
螺母 GB/T 6172.1 M12
螺纹规格为M1.6～M64的六角薄螺母：
螺纹规格
D
|
P1)
|
da
|
dw
min
|
e
min
|
m
|
mw
min
|
s
|
min
|
max
|
max
|
min
|
公称=max
|
min
|
M1.6
|
0.35
|
1.6
|
1.84
|
2.4
|
3.41
|
1
|
0.75
|
0.6
|
3.2
|
3.02
|
M2
|
0.4
|
2
|
2.3
|
3.1
|
4.32
|
1.2
|
0.95
|
0.8
|
4
|
3.82
|
M2.5
|
0.45
|
2.5
|
2.9
|
4.1
|
5.45
|
1.6
|
1.35
|
1.1
|
5
|
4.82
|
M3
|
0.5
|
3
|
3.45
|
4.6
|
6.01
|
1.8
|
1.55
|
1.2
|
5.5
|
5.32
|
M4
|
0.7
|
4
|
4.6
|
5.9
|
7.66
|
2.2
|
1.95
|
1.6
|
7
|
6.78
|
M5
|
0.8
|
5
|
5.75
|
6.9
|
8.79
|
2.7
|
2.45
|
2
|
8
|
7.78
|
M6
|
1
|
6
|
6.75
|
8.9
|
11.05
|
3.2
|
2.9
|
2.3
|
10
|
9.78
|
M8
|
1.25
|
8
|
8.75
|
11.6
|
14.38
|
4
|
3.7
|
3
|
13
|
12.73
|
M10
|
1.5
|
10
|
10.8
|
14.6
|
17.77
|
5
|
4.7
|
3.8
|
16
|
15.73
|
M12
|
1.75
|
12
|
13
|
16.6
|
20.03
|
6
|
5.7
|
4.6
|
18
|
17.73
|
M16
|
2
|
16
|
17.3
|
22.5
|
26.75
|
8
|
7.42
|
5.9
|
24
|
23.67
|
M20
|
2.5
|
20
|
21.6
|
27.7
|
32.95
|
10
|
9.10
|
7.3
|
30
|
29.16
|
M24
|
3
|
24
|
25.9
|
33.2
|
39.554
|
12
|
10.9
|
8.7
|
36
|
35
|
M30
|
3.5
|
30
|
32.4
|
42.8
|
50.85
|
15
|
13.9
|
11.1
|
46
|
45
|
M36
|
4
|
36
|
38.9
|
51.1
|
60.79
|
18
|
16.9
|
13.5
|
55
|
53.8
|
M42
|
4.5
|
42
|
45.4
|
60
|
71.3
|
21
|
19.7
|
15.8
|
65
|
63.1
|
M48
|
5
|
48
|
51.8
|
69.5
|
82.6
|
24
|
22.7
|
18.2
|
75
|
73.1
|
M56
|
5.5
|
56
|
60.5
|
78.7
|
93.56
|
28
|
26.7
|
21.4
|
85
|
82.8
|
M64
|
6
|
64
|
69.1
|
88.2
|
104.86
|
32
|
30.4
|
24.3
|
95
|
92.8
|
注：1）P—螺距。
非优选的螺纹规格
螺纹规格
D
|
P1)
|
da
|
dw
min
|
e
min
|
m
|
mw
min
|
s
|
min
|
max
|
max
|
min
|
公称=max
|
min
|
M3.5
|
0.6
|
3.5
|
4
|
5.1
|
6.58
|
2
|
1.75
|
1.4
|
6
|
5.82
|
M14
|
2
|
14
|
15.1
|
19.6
|
23.35
|
7
|
6.42
|
5.1
|
21
|
20.67
|
M18
|
2.5
|
18
|
19.5
|
24.9
|
29.56
|
9
|
8.42
|
6.7
|
27
|
26.16
|
M22
|
2.5
|
22
|
23.7
|
31.4
|
37.29
|
11
|
9.9
|
7.9
|
34
|
33
|
M27
|
3
|
27
|
29.1
|
38
|
45.2
|
13.5
|
12.4
|
9.9
|
41
|
40
|
M33
|
3.5
|
33
|
35.6
|
46.6
|
55.37
|
16.5
|
15.4
|
12.3
|
50
|
49
|
M39
|
4
|
39
|
42.1
|
55.9
|
66.44
|
19.5
|
18.2
|
14.6
|
60
|
58.8
|
M45
|
4.5
|
45
|
48.6
|
64.7
|
76.95
|
22.5
|
21.2
|
17
|
70
|
68.1
|
M52
|
5
|
52
|
56.2
|
74.2
|
88.25
|
26
|
24.7
|
19.8
|
80
|
78.1
|
M60
|
5.5
|
60
|
64.8
|
83.4
|
99.21
|
30
|
28.7
|
23
|
90
|
87.8
|
注：1）P—螺距。
