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Hexagon head screw UNC |
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BS ≈1768 ANSI ≈B18.2.1 |
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Technical Parameter |
d | Threads per inch | F | A | 1/4 | 20 | 4 | 7/16 | 5/16 | 18 | 5,2 | 1/2 | 3/8 | 16 | 6 | 9/16 | 7/16 | 14 | 7,1 | 5/8 | 1/2 | 13 | 7,9 | 3/4 | 9/16 | 12 | 9,1 | 13/16 | 5/8 | 11 | 9,9 | 15/16 | 3/4 | 10 | 11,9 | 1.1/8 | 7/8 | 9 | 13,9 | 1.5/16 | 1.IN. | 8 | 15,5 | 1.1/2 | 1.1/8 | 7 | 17,5 | 1.11/16 | 1.1/4 | 7 | 19,8 | 1.7/8 | 1.1/2 | 6 | 23，8 | 2.1/4 |
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Product Category |
Thread | Driving features | Material | Class | Surface treatment | Packaging | Code | Page | UNC | hexagon | St | Grade 5 |
| Standard | 02410 | 1-47 | UNC | hexagon | St | Grade 5 | Zipl | Standard | 02430 | 1-48 | UNC | hexagon | St.St. A2 |
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| Standard | 51016 | 1-48 | UNC | hexagon | St.St. A4 |
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| Standard | 55016 | 1-48 |
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