20 内六角花形盘头螺钉GB/T 2672—2004标准
内六角花形盘头螺钉GB2672—2004标准
国标原文档下载:
2017版:GB/T2672-2017.pdf
2004版(旧):GB/T2672-2004.pdf
内六角花形盘头螺钉的尺寸规格、质量见表4.2-47、表4.2-48。
表4.2-47 内六角花形盘头螺钉的尺寸规格(mm)
螺纹规格 d (6g) | M2 | M2.5 | M3 | (M3.5) | M4 | M5 | M6 | M8 | M10 | |
a max | 0.8 | 0.9 | 1 | 1.2 | 1.4 | 1.6 | 2 | 2.5 | 3 | |
b min | 25 | 25 | 25 | 38 | 38 | 38 | 38 | 38 | 38 | |
dk max | 4 | 5 | 5.6 | 7 | 8 | 9.5 | 12 | 16 | 20 | |
k max | 1.6 | 2.1 | 2.4 | 2.6 | 3.1 | 3.7 | 4.6 | 6 | 7.5 | |
rf ≈ | 3.2 | 4 | 5 | 6 | 6.5 | 8 | 10 | 13 | 16 | |
六角花形 | 槽号No. | 6 | 8 | 10 | 15 | 20 | 25 | 30 | 45 | 50 |
A 参考 | 1.75 | 2.4 | 2.8 | 3.35 | 3.95 | 4.5 | 5.6 | 7.95 | 8.95 | |
t max | 0.77 | 1.04 | 1.27 | 1.33 | 1.6 | 1.91 | 2.42 | 3.18 | 4.02 | |
l① 商品规格范围 | 3~20 | 3~25 | 4~30 | 5〜35 | 5〜40 | 6~50 | 8~60 | 10~60 | 12~60 |
注:尽可能不采用括号内的规格。
①公称长度系列为:3、4、5、6-16(2进级)、20-60(5进级)。
表4.2-48 内六角花形盘头螺钉的质量
每1000件钢螺钉的质量(p=7.85g/cm³)/kg
l | G | l | G | l | G | l | G | l | G | l | G | l | G | l | G | l | G |
M2 | M2.5 | M3 | M3.5 | M4 | M5 | M6 | M8 | M10 | |||||||||
3 | 0.178 | 3 | 0.336 | 4 | 0.544 | 5 | 0.891 | 5 | 1.3 | 6 | 2.32 | 8 | 4.37 | 10 | 9.96 | 12 | 19.8 |
4 | 0.196 | 4 | 0.366 | 5 | 0.588 | 6 | 0.951 | 6 | 1.38 | 8 | 2.57 | 10 | 4.72 | 12 | 10.6 | 14 | 20.5 |
5 | 0.215 | 5 | 0.396 | 6 | 0.632 | 8 | 1.07 | 8 | 1.53 | 10 | 2.81 | 12 | 5.07 | 14 | 11.2 | 16 | 21.8 |
6 | 0.233 | 6 | 0.426 | 8 | 0.72 | 10 | 1.19 | 10 | 1.69 | 12 | 3.06 | 14 | 5.42 | 16 | 11.9 | 20 | 23.8 |
8 | 0.27 | 8 | 0.486 | 10 | 0.808 | 12 | 1.31 | 12 | 1.84 | 14 | 3.31 | 16 | 5.78 | 20 | 13.2 | 25 | 26.3 |
10 | 0.307 | 10 | 0.546 | 12 | 0.896 | 14 | 1.43 | 14 | 2 | 16 | 3.56 | 20 | 6.48 | 25 | 14.8 | 30 | 28.8 |
12 | 0.344 | 12 | 0.606 | 14 | 0.984 | 16 | 1.55 | 16 | 2.15 | 20 | 4.05 | 25 | 7.36 | 30 | 16.4 | 35 | 31.3 |
14 | 0.381 | 14 | 0.666 | 16 | 1.07 | 20 | 1.55 | 20 | 2.46 | 25 | 4.67 | 30 | 8.24 | 35 | 18 | 40 | 33.9 |
16 | 0.418 | 16 | 0.726 | 20 | 1.25 | 25 | 2.09 | 25 | 2.85 | 30 | 5.29 | 35 | 9.12 | 40 | 19.6 | 45 | 36.4 |
20 | 0.492 | 20 | 0.846 | 25 | 1.47 | 30 | 2.39 | 30 | 3.23 | 35 | 5.91 | 40 | 10 | 45 | 21.2 | 50 | 38.9 |
25 | 0.996 | 30 | 1.69 | 35 | 2.68 | 35 | 3.62 | 40 | 6.52 | 45 | 10.9 | 50 | 22.8 | 55 | 41.4 | ||
40 | 4.01 | 45 | 7.14 | 50 | 11.8 | 55 | 24.4 | 60 | 43.9 | ||||||||
50 | 7.76 | 55 | 12.6 | 60 | 26 | ||||||||||||
60 | 13.5 |
产品示例:
GB2672内梅花盘头螺钉:
GB2672内梅花盘头螺钉(带柱防盗):