28 半圆头带榫螺栓GB/T 13—1988标准
半圆头带榫螺栓GB13—1988标准
半圆头带榫螺栓的尺寸规格、质量见表4.1-52和4.1-53。
表4.1-52 半圆头带榫螺栓的尺寸规格（mm)
| 螺纹规格 d | M6 | M8 | M10 | M12 | (M14) | M16 | M20 | M24 | |
| b | l<125 | 18 | 22 | 26 | 30 | 34 | 38 | 46 | 54 |
| 125< l≤200 | — | 28 | 32 | 36 | 40 | 44 | 52 | 60 | |
| dk | max | 12.1 | 15.1 | 18.1 | 22.3 | 25.3 | 29.3 | 35.6 | 43.6 |
| min | 10.3 | 13.3 | 16.3 | 20.16 | 23.16 | 27.16 | 33 | 41 | |
| Sn | max | 2.7 | 2.7 | 3.8 | 3.8 | 4.8 | 4.8 | 4.8 | 6.3 |
| min | 2.3 | 2.3 | 3.2 | 3.2 | 4.2 | 4.2 | 4.2 | 5.7 | |
| h1 | max | 2.7 | 3.2 | 3.8 | 4.3 | 5.3 | 5.3 | 6.3 | 7.4 |
| min | 2.3 | 2.8 | 3.2 | 3.7 | 4.7 | 4.7 | 5.7 | 6.6 | |
| k | max | 4.08 | 5.28 | 6.48 | 8.9 | 9.9 | 10.9 | 13.1 | 17.1 |
| min | 3.2 | 4.4 | 5.6 | 7.55 | 8.55 | 9.55 | 11.45 | 15.45 | |
| d.s | max | 6.48 | 8.58 | 10.58 | 12.7 | 14.7 | 16.7 | 20.84 | 24.84 |
| Iran | 5.52 | 7.42 | 9.42 | 11.3 | 13.3 | 15.3 | 19.16 | 23.16 | |
| h min | 4 | 5 | 6 | 7 | 8 | 9 | 11 | 13 | |
| r min | 0.5 | 0.5 | 0.5 | 0.8 | 0.8 | 1 | 1 | 1.5 | |
| R | 6 | 7.5 | 9 | 11 | 13 | 15 | 18 | 22 | |
| x max | 2.5 | 3.2 | 3.8 | 4.3 | 5 | 5 | 6.3 | 7.5 | |
| l ① | 20〜60 | 20〜80 | 30〜100 | 35〜120 | 35〜140 | 50 ~160 | 60〜200 | 80~200 | |
注：尽量不采用带括号的规格。
①公称长度系列：20-70(5进级）、80-160(10进级）、180、200 mm。
表4.1-53 半圆头带榫螺栓的质量（kg)
| 每1000件钢制品的大约质量 | |||||||||||||||
| l | G | l | G | l | G | l | G | l | G | l | G | l | G | l | G |
| M6 | M8 | M10 | M12 | (M14) | M16 | M20 | M24 | ||||||||
| 20 | 4.77 | 20 | 9.27 | 30 | 20.65 | 35 | 37.45 | 35 | 53.51 | 50 | 93.38 | 60 | 171.2 | 80 | 340.1 |
| 25 | 5.62 | 25 | 10.83 | 35 | 23.1 | 40 | 41.02 | 40 | 58.39 | (55) | 99.93 | (65) | 181.5 | 90 | 369.6 |
| 30 | 6.48 | 30 | 12.38 | 40 | 25.56 | 45 | 44.58 | 45 | 63.26 | 60 | 106.5 | 70 | 191.7 | 100 | 399.1 |
| 35 | 7.34 | 35 | 13.94 | 45 | 28.02 | 50 | 48.14 | 50 | 68.14 | (65) | 113 | 80 | 212.2 | 110 | 428.6 |
| 40 | 8.2 | 40 | 15.49 | 50 | 30.47 | (55) | 51.7 | (55) | 73.01 | 70 | 119.6 | 90 | 232.7 | 120 | 458.1 |
| 45 | 9.05 | 45 | 17.05 | (55) | 32.93 | 60 | 55.27 | 60 | 77.89 | 80 | 132.6 | 100 | 253.2 | 130 | 487.6 |
| 50 | 9.91 | 50 | 18.6 | 60 | 35.38 | (65) | 58.83 | (65) | 82.76 | 90 | 145.7 | 110 | 273.6 | 140 | 517.1 |
| (55) | 10.77 | (55) | 20.16 | (65) | 37.84 | 70 | 62.39 | 70 | 87.64 | 100 | 158.8 | 120 | 294.1 | 150 | 546.6 |
| 60 | 11.62 | 60 | 21.71 | 70 | 40.29 | 80 | 69.51 | 80 | 97.38 | 110 | 171.9 | 130 | 314.6 | 160 | 576.1 |
| (65) | 23.27 | 80 | 45.21 | 90 | 76.64 | 90 | 107.1 | 120 | 185 | 140 | 335.1 | 180 | 635.1 | ||
| 70 | 24.82 | 90 | 50.12 | 100 | 83.76 | 100 | 116.9 | 130 | 198.1 | 150 | 355.5 | 200 | 694.1 | ||
| 80 | 27.93 | 100 | 55.03 | 110 | 90.89 | 110 | 126.6 | 140 | 211.2 | 160 | 376 | ||||
| 120 | 98.01 | 120 | 136.4 | 150 | 224.2 | 180 | 417 | ||||||||
| 130 | 146.1 | 160 | 237.3 | 200 | 457.9 | ||||||||||
| 140 | 155.9 | ||||||||||||||
注：表列规格为商品规格。尽可能不采用括号内的规格。