4 B级细杆六角头螺栓GB/T 5784—1986标准
B级细杆六角头螺栓GB5784—1986标准
B级细杆六角头螺栓的尺寸规格和质量见表4.1-4和表4.1-5。
表4.1-4 B级细杆六角头螺栓的尺寸规格(mm)
用途:
主要用于表面光洁、对精度要求较高的机器、设备上
螺纹规格d (6 g) | M3 | M4 | M5 | M6 | M8 | M10 | M12 | (M14) | M16 | M20 | |
b(参考) | l≤125 | 12 | 14 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 46 |
125< l≤200 | — | — | — | — | 28 | 32 | 36 | 40 | 44 | 52 | |
da max | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 22.4 | |
e min | 5.98 | 7.5 | 8.63 | 10.89 | 14.2 | 17.59 | 19.85 | 22.78 | 26.17 | 32.95 | |
S | max | 5.5 | 7 | 8 | 10 | 13 | 16 | 18 | 21 | 24 | 30 |
min | 5.2 | 6.64 | 7.64 | 9.64 | 12.57 | 15.57 | 17.57 | 20.16 | 23.16 | 29.16 | |
K | 公称 | 2 | 2.8 | 3.5 | 4 | 5.3 | 6.4 | 7.5 | 8.8 | 10 | 12.5 |
l①长度范围 | 20-30 | 20-40 | 25-50 | 25-60 | 30-80 | 40-100 | 45-120 | 50-140 | 55-150 | 65-150 |
注:尽可能不采用括号内的规格。
①公称长度系列为20〜50(5进级)、(55)、60、(65)、70〜150 mm(10 mm 进级)。
表4.1-5 B级细杆六角头螺栓的质量(kg)
每1000件钢制品的大约质量 | |||||||
l | G | l | G | l | G | l | G |
M3 | M8 | M12 | M16 | ||||
20 | 1.28 | 30 | 15.78 | 45 | 49.9 | (55) | 113.3 |
25 | 1.49 | 35 | 17.34 | 50 | 53.47 | 60 | 119.9 |
30 | 1.7 | 40 | 18.89 | 55 | 57.03 | (65) | 126.4 |
M4 | 45 | 20.45 | 60 | 60.59 | 70 | 133 | |
20 | 2.45 | 50 | 22 | 65 | 64.15 | 80 | 146 |
25 | 2.82 | (55) | 23.56 | 70 | 67.71 | 90 | 159.1 |
30 | 3.2 | 60 | 25.11 | 80 | 74.84 | 100 | 172.2 |
35 | 3.57 | (65) | 26.67 | 90 | 81.96 | 110 | 185.3 |
40 | 3.95 | 70 | 28.22 | 100 | 89.09 | 120 | 198.4 |
M5 | 80 | 31.33 | 110 | 96.21 | 130 | 211.5 | |
25 | 4.58 | M10 | 120 | 103.3 | 140 | 224.5 | |
30 | 5.18 | 40 | 31.6 | (M14) | 150 | 237.6 | |
35 | 5.78 | 45 | 34.06 | 50 | 76.32 | M20 | |
40 | 6.38 | 50 | 36.51 | (55) | 81.19 | (65) | 215.1 |
45 | 6.98 | (55) | 38.97 | 60 | 86.07 | 70 | 225.3 |
50 | 7.58 | 60 | 41.43 | (65) | 90.94 | 80 | 245.8 |
M6 | (65) | 43.88 | 70 | 95.82 | 90 | 266.2 | |
25 | 7.15 | 70 | 46.34 | 80 | 105.6 | 100 | 286.7 |
30 | 8.01 | 80 | 51.25 | 90 | 115.3 | 110 | 307.2 |
35 | 8.86 | 90 | 56.16 | 100 | 125.1 | 120 | 327.7 |
40 | 9.72 | 100 | 61.07 | 110 | 134.8 | 130 | 348.2 |
45 | 10.58 | 120 | 144.6 | 140 | 368.6 | ||
50 | 11.44 | 130 | 154.3 | 150 | 389.1 | ||
(55) | 12.29 | 140 | 164.1 | ||||
60 | 13.15 |
注:表列规格为商品规格。尽可能不采用括号内的规格。