21 钢网架球节点用高强度螺栓GB/T 16939—1997标准
钢网架球节点用高强度螺栓GB16939—1997标准
钢网架球节点用高强度螺栓的尺寸规格见表4.1-40。
表4.1-40 钢网架球节点用高强度螺栓的尺寸规格(mm)
螺纹规格d(6g) | M12 | M14 | M16 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 | M42 | M45 | M48 | M52 | M56x4 | M60x4 | M64 x 4 |
p | 1.75 | 2 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 | 3.5 | 4 | 4 | 4.5 | 4.5 | 5 | 5 | 4 | 4 | 4 |
b min | 15 | 17 | 20 | 25 | 27 | 30 | 33 | 37 | 40 | 44 | 47 | 50 | 55 | 58 | 62 | 66 | 70 | 74 |
dk max | 18 | 21 | 24 | 30 | 32 | 36 | 41 | 46 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 90 | 95 | 100 |
ds min | 11.45 | 13.65 | 15.65 | 19.58 | 21.58 | 23.58 | 26.58 | 29.58 | 32.5 | 35.5 | 38.5 | 41.5 | 44.5 | 48.5 | 52.6 | 56.6 | 60.6 | 64.6 |
K 公称 | 6.4 | 7.5 | 10 | 12.5 | 14 | 15 | 17 | 18.7 | 21 | 22.5 | 25 | 26 | 28 | 30 | 33 | 35 | 38 | 40 |
da max | 15.2 | 17.29 | 19.2 | 24.4 | 26.4 | 28.4 | 32.4 | 35.4 | 38.4 | 42.4 | 45.4 | 48.6 | 52.6 | 56.6 | 62.6 | 67 | 71 | 75 |
l 公称 | 50 | 54 | 62 | 73 | 75 | 82 | 90 | 98 | 101 | 125 | 128 | 136 | 145 | 148 | 162 | 172 | 196 | 205 |
l1 公称 | 18 | 22 | 24 | 28 | 43 | 48 | 53 | 58 | ||||||||||
l2 (参考) | 10 | 13 | 16 | 18 | 20 | 24 | 26 | 30 | 38 | 42 | 57 | |||||||
n min | 3 | 5 | 6 | 8 | ||||||||||||||
t1 min | 2.2 | 2.7 | 3.62 | 4.62 | ||||||||||||||
t2 min | 1.7 | 2.2 | 2.7 | 3.62 |