圆螺母（摘自GB 812-88）
螺纹规格为M10×1～M200×3的圆螺母。
标记示例：
螺纹规格D＝M16×1.5、材料为45钢、槽或全部热处理后硬度HRC35～45、表面氧化的圆螺母的标记：
螺母 GB 812 M16×1.5
螺纹规格为M10×1～M200×3的圆螺母：
螺纹规格
D×P
|
dk
|
d1
|
m
|
n
|
t
|
C
|
C1
|
max
|
min
|
max
|
min
|
M10×1
|
22
|
16
|
8
|
4.3
|
4
|
2.6
|
2
|
0.5
|
0.5
|
M12×1.25
|
25
|
19
|
8
|
4.3
|
4
|
2.6
|
2
|
0.5
|
0.5
|
M14×1.5
|
28
|
20
|
8
|
4.3
|
5
|
2.6
|
2
|
0.5
|
0.5
|
M16×1.5
|
30
|
22
|
8
|
5.3
|
5
|
3.1
|
2.5
|
0.5
|
0.5
|
M18×1.5
|
32
|
24
|
8
|
5.3
|
5
|
3.1
|
2.5
|
0.5
|
0.5
|
M20×1.5
|
35
|
27
|
8
|
5.3
|
5
|
3.1
|
2.5
|
0.5
|
0.5
|
M22×1.5
|
38
|
30
|
10
|
5.3
|
5
|
3.1
|
2.5
|
1
|
0.5
|
M24×1.5
|
42
|
34
|
10
|
5.3
|
5
|
3.1
|
2.5
|
1
|
0.5
|
M25×1.51）
|
42
|
34
|
10
|
5.3
|
5
|
3.1
|
2.5
|
1
|
0.5
|
M27×1.5
|
45
|
37
|
10
|
5.3
|
5
|
3.1
|
2.5
|
1
|
0.5
|
M30×1.5
|
48
|
40
|
10
|
5.3
|
5
|
3.1
|
2.5
|
1
|
0.5
|
M33×1.5
|
52
|
43
|
10
|
6.3
|
6
|
3.6
|
3
|
1
|
0.5
|
M35×1.51）
|
52
|
43
|
10
|
6.3
|
6
|
3.6
|
3
|
1
|
0.5
|
M36×1.5
|
55
|
46
|
10
|
6.3
|
6
|
3.6
|
3
|
1
|
0.5
|
M39×1.5
|
58
|
49
|
10
|
6.3
|
6
|
3.6
|
3
|
1.5
|
0.5
|
M40×1.51）
|
58
|
49
|
10
|
6.3
|
6
|
3.6
|
3
|
1.5
|
0.5
|
M42×1.5
|
62
|
53
|
10
|
6.3
|
6
|
3.6
|
3
|
1.5
|
0.5
|
M45×1.5
|
68
|
59
|
10
|
6.3
|
6
|
3.6
|
3
|
1.5
|
0.5
|
M48×1.5
|
72
|
61
|
12
|
8.36
|
8
|
4.25
|
3.5
|
1.5
|
0.5
|
M50×1.51）
|
72
|
61
|
12
|
8.36
|
8
|
4.25
|
3.5
|
1.5
|
0.5
|
M52×1.5
|
78
|
67
|
12
|
8.36
|
8
|
4.25
|
3.5
|
1.5
|
0.5
|
M55×2
|
78
|
67
|
12
|
8.36
|
8
|
4.25
|
3.5
|
1.5
|
0.5
|
M56×2
|
85
|
74
|
12
|
8.36
|
8
|
4.25
|
3.5
|
1.5
|
1
|
M60×2
|
90
|
79
|
12
|
8.36
|
8
|
4.25
|
3.5
|
1.5
|
1
|
M64×2
|
95
|
84
|
12
|
8.36
|
8
|
4.25
|
3.5
|
1.5
|
1
|
M65×21）
|
95
|
84
|
12
|
8.36
|
8
|
4.25
|
3.5
|
1.5
|
1
|
M68×2
|
100
|
88
|
12
|
10.36
|
10
|
4.75
|
4
|
1.5
|
1
|
M72×2
|
105
|
93
|
15
|
10.36
|
10
|
4.75
|
4
|
1.5
|
1
|
M75×21）
|
105
|
93
|
15
|
10.36
|
10
|
4.75
|
4
|
1.5
|
1
|
M76×2
|
110
|
98
|
15
|
10.36
|
10
|
4.75
|
4
|
1.5
|
1
|
M80×2
|
115
|
103
|
15
|
10.36
|
10
|
4.75
|
4
|
1.5
|
1
|
M85×2
|
120
|
108
|
15
|
10.36
|
10
|
4.75
|
4
|
1.5
|
1
|
M90×2
|
125
|
112
|
18
|
12.43
|
12
|
5.75
|
5
|
1.5
|
1
|
M95×2
|
130
|
117
|
18
|
12.43
|
12
|
5.75
|
5
|
1.5
|
1
|
M100×2
|
135
|
122
|
18
|
12.43
|
12
|
5.75
|
5
|
1.5
|
1
|
M105×2
|
140
|
127
|
18
|
12.43
|
12
|
5.75
|
5
|
1.5
|
1
|
M110×2
|
150
|
135
|
18
|
14.43
|
14
|
6.75
|
6
|
1.5
|
1
|
M115×2
|
155
|
140
|
22
|
14.43
|
14
|
6.75
|
6
|
1.5
|
1
|
M120×2
|
160
|
145
|
22
|
14.43
|
14
|
6.75
|
6
|
1.5
|
1
|
M125×2
|
165
|
150
|
22
|
14.43
|
14
|
6.75
|
6
|
1.5
|
1
|
M130×2
|
170
|
155
|
22
|
14.43
|
14
|
6.75
|
6
|
1.5
|
1
|
M140×2
|
180
|
165
|
26
|
14.43
|
14
|
6.75
|
6
|
1.5
|
1
|
M150×2
|
200
|
180
|
26
|
16.43
|
16
|
7.9
|
7
|
1.5
|
1
|
M160×3
|
210
|
190
|
26
|
16.43
|
16
|
7.9
|
7
|
2
|
1.5
|
M170×3
|
220
|
200
|
26
|
16.43
|
16
|
7.9
|
7
|
2
|
1.5
|
M180×3
|
230
|
210
|
30
|
16.43
|
16
|
7.9
|
7
|
2
|
1.5
|
M190×3
|
240
|
220
|
30
|
16.43
|
16
|
7.9
|
7
|
2
|
1.5
|
M200×3
|
250
|
230
|
30
|
16.43
|
16
|
7.9
|
7
|
2
|
1.5
|
