1型六角螺母（摘自GB/T 6170-2000）
螺纹规格为M1.6～M64、性能等级为6、8、10、A2-50、A2-70、A4-50、A4-70、CU2、CU3和AL4级、产品等级为A和B级的1型六角螺母。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8级、不经表面处理、产品等级为A级的1型六角螺母的标记：
螺母 GB/T 6170 M12
螺纹规格为M1.6～M64的1型六角螺母：
螺纹规格
D
|
P1)
|
c
|
da
|
dw
min
|
e
min
|
m
|
mw
min
|
s
|
max
|
min
|
max
|
min
|
max
|
min
|
公称=max
|
min
|
M1.6
|
0.35
|
0.2
|
0.1
|
1.84
|
1.60
|
2.4
|
3.41
|
1.3
|
1.05
|
0.8
|
3.2
|
3.02
|
M2
|
0.4
|
0.2
|
0.1
|
2.3
|
2.0
|
3.1
|
4.32
|
1.6
|
1.35
|
1.1
|
4
|
3.82
|
M2.5
|
0.45
|
0.3
|
0.1
|
2.9
|
2.5
|
4.1
|
5.45
|
2
|
1.75
|
1.4
|
5
|
4.82
|
M3
|
0.5
|
0.4
|
0.15
|
3.45
|
3.00
|
4.6
|
6.01
|
2.4
|
2.15
|
1.7
|
5.5
|
5.32
|
M4
|
0.7
|
0.4
|
0.15
|
4.6
|
4.0
|
5.9
|
7.66
|
3.2
|
2.9
|
2.3
|
7
|
6.78
|
M5
|
0.8
|
0.5
|
0.15
|
5.75
|
5.00
|
6.9
|
8.79
|
4.7
|
4.4
|
3.5
|
8
|
7.78
|
M6
|
1
|
0.5
|
0.15
|
6.75
|
6.00
|
8.9
|
11.05
|
5.2
|
4.9
|
3.9
|
10
|
9.78
|
M8
|
1.25
|
0.6
|
0.15
|
8.75
|
8.00
|
11.6
|
14.38
|
6.8
|
6.44
|
5.2
|
13
|
12.73
|
M10
|
1.5
|
0.6
|
0.15
|
10.8
|
10.0
|
14.6
|
17.77
|
8.4
|
8.04
|
6.4
|
16
|
15.73
|
M12
|
1.75
|
0.6
|
0.15
|
13
|
12
|
16.6
|
20.03
|
10.8
|
10.37
|
8.3
|
18
|
17.73
|
M16
|
2
|
0.8
|
0.2
|
17.3
|
16.0
|
22.5
|
26.75
|
14.8
|
14.1
|
11.3
|
24
|
23.67
|
M20
|
2.5
|
0.8
|
0.2
|
21.6
|
20.0
|
27.7
|
32.95
|
18
|
16.9
|
13.5
|
30
|
29.16
|
M24
|
3
|
0.8
|
0.2
|
25.9
|
24.0
|
33.3
|
39.55
|
21.5
|
20.2
|
16.2
|
36
|
35
|
M30
|
3.5
|
0.8
|
0.2
|
32.4
|
30.0
|
42.8
|
50.85
|
25.6
|
24.3
|
19.4
|
46
|
45
|
M36
|
4
|
0.8
|
0.2
|
38.9
|
36.0
|
51.1
|
60.79
|
31
|
29.4
|
23.5
|
55
|
53.8
|
M42
|
4.5
|
1.0
|
0.3
|
45.4
|
42.0
|
60
|
71.3
|
34
|
32.4
|
25.9
|
65
|
63.1
|
M48
|
5
|
1.0
|
0.3
|
51.8
|
48.0
|
69.5
|
82.6
|
38
|
36.4
|
29.1
|
75
|
73.1
|
M56
|
5.5
|
1.0
|
0.3
|
60.5
|
56.0
|
78.7
|
93.56
|
45
|
43.4
|
34.7
|
85
|
82.8
|
M64
|
6
|
1.0
|
0.3
|
69.1
|
64.0
|
88.2
|
104.86
|
51
|
49.1
|
39.3
|
95
|
92.8
|
注：1）P—螺距。
非优选的螺纹规格
螺纹规格
D
|
P1)
|
c
|
da
|
dw
min
|
e
min
|
m
|
mw
min
|
s
|
max
|
min
|
max
|
min
|
max
|
min
|
公称=max
|
min
|
M3.5
|
0.6
|
0.40
|
0.15
|
4.0
|
3.5
|
5
|
6.58
|
2.80
|
2.55
|
2
|
6.00
|
5.82
|
M14
|
2
|
0.60
|
0.15
|
15.1
|
14.0
|
19.6
|
23.36
|
12.8
|
12.1
|
9.7
|
21.00
|
20.67
|
M18
|
2.5
|
0.8
|
0.2
|
19.5
|
18.0
|
24.9
|
29.56
|
15.8
|
15.1
|
12.1
|
27.00
|
26.16
|
M22
|
2.5
|
0.8
|
0.2
|
23.7
|
22.0
|
31.4
|
37.29
|
19.4
|
18.1
|
14.5
|
34
|
33
|
M27
|
3
|
0.8
|
0.2
|
29.1
|
27.0
|
38
|
45.2
|
23.8
|
22.5
|
18
|
41
|
40
|
M33
|
3.5
|
0.8
|
0.2
|
35.6
|
33.0
|
46.6
|
55.37
|
28.7
|
27.4
|
21.9
|
50
|
49
|
M39
|
4
|
1.0
|
0.3
|
42.1
|
39.0
|
55.9
|
66.44
|
33.4
|
31.8
|
25.4
|
60.0
|
58.8
|
M45
|
4.5
|
1.0
|
0.3
|
48.6
|
45.0
|
64.7
|
76.95
|
36.0
|
34.4
|
27.5
|
70.0
|
68.1
|
M52
|
5
|
1.0
|
0.3
|
56.2
|
52.0
|
74.2
|
88.25
|
42.0
|
40.4
|
32.3
|
80.0
|
78.1
|
M60
|
5.5
|
1.0
|
0.3
|
64.8
|
60.0
|
83.4
|
99.21
|
48.0
|
46.4
|
37.1
|
90.0
|
87.8
|
注：1）P—螺距。
