端面带孔和侧面带孔圆螺母GB815、GB816—1988标准
端面带孔和侧面带孔圆螺母的尺寸规格、质量见表4.3-34〜表4.3-36。
表4.3-34 端面带孔和侧面带孔圆螺母的尺寸规格（mm)
| 螺纹规格 D (6H) |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
| dk |
max |
5.5 |
7 |
8 |
10 |
12 |
14 |
18 |
22 |
| m max |
2 |
2.2 |
2.5 |
3.5 |
4.2 |
5 |
6.5 |
8 |
| d1 |
1 |
1.2 |
1.5 |
2 |
2.5 |
3 |
3.5 |
| t |
GB/T 815 |
2 |
2.2 |
1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
| GB/T 816 |
1.2 |
1.5 |
2 |
2.5 |
3 |
3.5 |
4 |
| B |
4 |
5 |
5.5 |
7 |
8 |
10 |
13 |
15 |
| K |
1 |
1.1 |
1.3 |
1.8 |
2.1 |
2.5 |
3.3 |
4 |
| C |
0.2 |
0.3 |
0.4 |
0.5 |
0.8 |
| d2 |
Ml.2 |
Ml .4 |
Ml.4 |
M2 |
M2 |
M2.5 |
M3 |
M3 |
表4.3-35 端面带孔圆螺母的质量（kg)
每1000件钢制品的大约质量
| 螺纹规格 |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
| 质量 |
0.24 |
0.44 |
0.67 |
1.51 |
2.57 |
4.16 |
9.03 |
16.7 |
表4.3-36 侧面带孔圆螺母的质量（kg)
每1000件钢制品的大约质量
| 螺纹规格 |
M2 |
M2.5 |
M3 |
M4 |
M5 |
M6 |
M8 |
M10 |
| 质量 |
0.23 |
0.43 |
0.63 |
1.45 |
2.45 |
3.93 |
8.64 |
16.1 |