Square Head Screws Faced Under Head with B.S.Threads - Black [Table 2]
BS 916 - 1953 英制薄方头全螺纹螺钉 - 粗制 - 车削支承面 [Table 2]
See all versions and complete specifications: Square Head Screws Faced Under Head with B.S.Threads - Black [Table 2] — Full Specification Page
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 8 | 2.09 | 1/32 | 10 | 1.480 | 0.636 | 1.450 | 0.666 |
| 1/4 | 18 | 0.74 | 1/32 | 22 | 0.525 | 0.198 | 0.515 | 0.218 |
| 3/4 | 5 | 3.41 | 3/64 | 8 | 2.410 | 1.02 | 2.365 | 1.08 |
| 3/8 | 12 | 1.30 | 1/32 | 16 | 0.920 | 0.345 | 0.900 | 0.375 |
| 5/8 | 6 | 3.14 | 3/64 |
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| 8 |
| 2.220 |
| 0.96 |
| 2.175 |
| 1.00 |
| 5/16 | 14 | 1.00 | 1/32 | 18 | 0.710 | 0.282 | 0.695 | 0.302 |
| 7/16 | 10 | 1.70 | 1/32 | 12 | 1.200 | 0.470 | 1.175 | 0.500 |
| 9/16 | 7 | 2.63 | 3/64 | 9 | 1.860 | 0.79 | 1.815 | 0.83 |
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