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 size d | 1/4 | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 1 | 1-1/8 | 1-1/4 | 1-3/8 | 1-1/2 | |
| PP | UNC | 20 | 18 | 16 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 7 | 6 | 6 |
| UNF | 28 | 24 | 24 | 20 | 20 | 18 | 18 | 16 | 14 | 12 | 12 | 12 | 12 | 12 | |
| ds | Maximum value | 0.25 | 0.3125 | 0.375 | 0.4375 | 0.5 | 0.5625 | 0.625 | 0.75 | 0.875 | 1 | 1.125 | 1.25 | 1.375 | 1.5 |
| Minimum value | 0.245 | 0.3065 | 0.369 | 0.4305 | 0.493 | 0.5545 | 0.617 | 0.741 | 0.866 | 0.99 | 1.114 | 1.239 | 1.363 | 1.488 | |
| s | Nominal | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 13/16 | 15/16 | 1-1/8 | 1-5/16 | 1-1/2 | 1-11/16 | 1-7/8 | 2-1/16 | 2-1/4 |
| Maximum value | 0.438 | 0.5 | 0.562 | 0.625 | 0.75 | 0.812 | 0.938 | 1.125 | 1.312 | 1.5 | 1.688 | 1.875 | 2.062 | 2.25 | |
| Minimum value | 0.428 | 0.489 | 0.551 | 0.612 | 0.736 | 0.798 | 0.922 | 1.1 | 1.285 | 1.469 | 1.631 | 1.812 | 1.994 | 2.175 | |
| e | Maximum value | 0.505 | 0.577 | 0.65 | 0.722 | 0.866 | 0.938 | 1.083 | 1.299 | 1.516 | 1.732 | 1.949 | 2.165 | 2.382 | 2.598 |
| Minimum value | 0.488 | 0.557 | 0.628 | 0.698 | 0.84 | 0.91 | 1.051 | 1.254 | 1.465 | 1.675 | 1.859 | 2.066 | 2.273 | 2.48 | |
| k | Nominal | 5/32 | 13/64 | 15/64 | 9/32 | 5/16 | 23/64 | 25/64 | 15/32 | 35/64 | 39/64 | 11/16 | 25/32 | 27/32 | 2001/5/16 |
| Maximum value | 0.163 | 0.211 | 0.243 | 0.291 | 0.323 | 0.371 | 0.403 | 0.483 | 0.563 | 0.627 | 0.718 | 0.813 | 0.878 | 0.974 | |
| Minimum value | 0.15 | 0.195 | 0.226 | 0.272 | 0.302 | 0.348 | 0.378 | 0.455 | 0.531 | 0.591 | 0.658 | 0.749 | 0.81 | 0.902 | |
| b | L≤6 | 0.75 | 0.875 | 1 | 1.125 | 1.25 | 1.375 | 1.5 | 1.75 | 2 | 2.25 | 2.5 | 2.75 | 3 | 3.25 |
| L＞6 | 1 | 1.125 | 1.25 | 1.375 | 1.5 | 1.625 | 1.75 | 2 | 2.25 | 2.5 | 2.75 | 3 | 3.25 | 3.5 | |
| x | Maximum value | 0.25 | 0.278 | 0.312 | 0.357 | 0.385 | 0.417 | 0.455 | 0.5 | 0.556 | 0.625 | 0.714 | 0.714 | 0.833 | 0.833 |
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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