We specialize in the research and development, production, and sales of various standard, non-standard, and fasteners such as high-quality and high-precision bolts, screws, nuts, washers, etc.
Fasteners have diverse materials and complete specifications, supporting non-standard customization.
Consulting service hotline:13306482520
Email:13306482520@163.com
| Thread specification d | M12 | M16 | M20 | (M22) | M24 | (M27) | M30 | |
| P | Pitch | 1.75 | 2 | 2.5 | 2.5 | 3 | 3 | 3.5 |
| c | Maximum value | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Minimum value | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | |
| da | Maximum value | 15.23 | 19.23 | 24.32 | 26.32 | 28.32 | 32.84 | 35.84 |
| ds | Maximum value | 12.43 | 16.43 | 20.52 | 22.52 | 24.52 | 27.84 | 30.84 |
| Minimum value | 11.57 | 15.57 | 19.48 | 21.48 | 23.48 | 26.16 | 29.16 | |
| dw | Minimum value | 19.2 | 24.9 | 31.4 | 33.3 | 38 | 42.8 | 46.5 |
| e | Minimum value | 22.78 | 29.56 | 37.29 | 39.55 | 45.2 | 50.85 | 55.37 |
| k | Nominal | 7.5 | 10 | 12.5 | 14 | 15 | 17 | 18.7 |
| Maximum value | 7.95 | 10.75 | 13.4 | 14.9 | 15.9 | 17.9 | 19.75 | |
| Maximum value | 7.05 | 9.25 | 11.6 | 13.1 | 14.1 | 16.1 | 17.65 | |
| k1 | Minimum value | 4.9 | 6.5 | 8.1 | 9.2 | 9.9 | 11.3 | 12.4 |
| r | Minimum value | 1 | 1 | 1.5 | 1.5 | 1.5 | 2 | 2 |
| s | Maximum value | 21 | 27 | 34 | 36 | 41 | 46 | 50 |
| Minimum value | 20.16 | 26.16 | 33 | 35 | 40 | 45 | 49 | |
| Thousand pieces of steel weight≈kg | - | - | - | - | - | - | - | |
| - | - | - | - | - | - | - | ||
| ①,Technical conditions shall comply with the provisions of GB/T 1231。 | ||||||||
E-Mail：13306482520@163.com
Phone：133-0648-2520
Address：008, Zone 9, Wanxing International Hardware City, Heilongjiang North Road, Chengyang District, Qingdao City, Shandong Province
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