蝶形螺母（摘自GB 62-88）
螺纹规格为M3×0.5～M16×1.5蝶形螺母。
标记示例：
螺纹规格D＝M10、材料为Q215、不经表面处理、A型蝶形螺母的标记：
螺母 GB/T 41 M12
螺纹规格为M3×0.5～M16×1.5蝶形螺母：
螺纹规格
D×P
|
dk
|
d
|
L
|
K
|
m
|
y
|
y1
|
d1
|
R
|
r
|
M3×0.5
|
7
|
6
|
20
|
8
|
3.5
|
1.25
|
1.5
|
3
|
3
|
2
|
M4×0.7
|
8
|
7
|
24
|
10
|
4
|
1.5
|
2
|
4
|
3.5
|
2.5
|
M5×0.8
|
10
|
8
|
28
|
12
|
5
|
2
|
2.5
|
4
|
4.5
|
3
|
M6×1
|
12
|
10
|
32
|
14
|
6
|
2.5
|
3
|
5
|
5
|
3.5
|
M8×1
|
15
|
13
|
40
|
18
|
8
|
3
|
3.5
|
6
|
6
|
4
|
M8×1.25
|
15
|
13
|
40
|
18
|
8
|
3
|
3.5
|
6
|
6
|
4
|
M10×1.5
|
18
|
15
|
48
|
22
|
10
|
3.5
|
4
|
7
|
7
|
5
|
M10×1.25
|
18
|
15
|
48
|
22
|
10
|
3.5
|
4
|
7
|
7
|
5
|
M12×1.75
|
22
|
19
|
58
|
27
|
12
|
4
|
5
|
8
|
8.5
|
6
|
M12×1.5
|
22
|
19
|
58
|
27
|
12
|
4
|
5
|
8
|
8.5
|
6
|
(M14×2)
|
26
|
23
|
64
|
30
|
14
|
5
|
6
|
9
|
9
|
7
|
(M14×1.5)
|
26
|
23
|
64
|
30
|
14
|
5
|
6
|
9
|
9
|
7
|
M16×2
|
30
|
26
|
72
|
32
|
14
|
6
|
7
|
10
|
10
|
8
|
M16×1.5
|
30
|
26
|
72
|
32
|
14
|
6
|
7
|
10
|
10
|
8
|
注：尽可能不采用括号内的规格。
