扣紧螺母（摘自GB 805-88）
螺纹规格为M6×1～M48×5的扣紧螺母。
标记示例：
螺纹规格D＝M12、材料为65Mn、热理硬度HRC30～40、表面氧化的扣紧螺母的标记：
螺母 GB 805 M12
螺纹规格为M6×1～M48×5的扣紧螺母：
螺纹规格
D×P
|
6×1
|
8×1.25
|
10×1.5
|
12×1.75
|
(14×2)
|
16×2
|
(18×2.5)
|
20×2.5
|
(22×2.5)
|
24×3
|
(27×3)
|
30×3.5
|
36×4
|
42×4.5
|
48×5
|
d
|
max
|
5.3
|
7.16
|
8.86
|
10.73
|
12.43
|
14.43
|
15.93
|
17.93
|
20.02
|
21.52
|
24.52
|
27.02
|
32.62
|
38.12
|
43.62
|
min
|
5
|
6.8
|
8.5
|
10.3
|
12
|
14
|
15.5
|
17.5
|
19.5
|
21
|
24
|
26.5
|
32
|
37.5
|
43
|
s
|
max
|
10
|
13
|
16
|
18
|
21
|
24
|
27
|
30
|
34
|
36
|
41
|
46
|
55
|
65
|
75
|
min
|
9.73
|
12.73
|
15.73
|
17.73
|
20.67
|
23.67
|
26.16
|
29.16
|
33
|
35
|
40
|
45
|
53.8
|
63.8
|
73.1
|
d1
|
7.5
|
9.5
|
12
|
14
|
16
|
18
|
20.5
|
22.5
|
25
|
27
|
30
|
34
|
40
|
47
|
54
|
n
|
1
|
1
|
1
|
1.5
|
1.5
|
1.5
|
2
|
2
|
2
|
2.5
|
2.5
|
2.5
|
3
|
3
|
3
|
e
|
11.5
|
16.2
|
19.6
|
21.9
|
25.4
|
27.7
|
31.2
|
34.6
|
36.9
|
41.6
|
47.3
|
53.1
|
63.5
|
75
|
86.5
|
m
|
3
|
4
|
5
|
5
|
6
|
6
|
7
|
7
|
7
|
9
|
9
|
9
|
12
|
12
|
14
|
δ
|
0.4
|
0.5
|
0.6
|
0.7
|
0.8
|
0.8
|
1
|
1
|
1
|
1.2
|
1.2
|
1.2
|
1.4
|
1.8
|
1.8
|
注：尽可能不采用括号内的规格。
