Square Bolts Faced Under Head, and Faced Under Head and Turned on Shank with B.S.Threads - Black [Table 2]
BS 916 - 1953 英制方头螺栓 - 粗制 - 车削支承面或车削支承面和光杆 [Table 2]
See all versions and complete specifications: Square Bolts Faced Under Head, and Faced Under Head and Turned on Shank with B.S.Threads - Black [Table 2] — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 8 | 0.636 | 0.666 | 0.992 | 1.480 | 10 | 1.040 | 2.09 | 1/32 | 1.000 | 1.450 |
| 1/4 | 18 | 0.198 | 0.218 | 0.3090 | 0.525 | 22 | 0.342 | 0.74 | 1/32 | 0.3125 | 0.515 |
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| 3/4 | 5 | 1.02 | 1.08 | 1.615 | 2.410 | 8 | 1.685 | 3.41 | 3/64 | 1.625 | 2.365 |
| 3/8 | 12 | 0.345 | 0.375 | 0.5585 | 0.920 | 16 | 0.592 | 1.30 | 1/32 | 0.5625 | 0.900 |
| 5/8 | 6 | 0.96 | 1.00 | 1.490 | 2.220 | 8 | 1.550 | 3.14 | 3/64 | 1.500 | 2.175 |
| 5/16 | 14 | 0.282 | 0.302 | 0.4335 | 0.710 | 18 | 0.468 | 1.00 | 1/32 | 0.4375 | 0.695 |
| 7/16 | 10 | 0.470 | 0.500 | 0.744 | 1.200 | 12 | 0.790 | 1.70 | 1/32 | 0.750 | 1.175 |
| 9/16 | 7 | 0.79 | 0.83 | 1.242 | 1.860 | 9 | 1.300 | 2.63 | 3/64 | 1.250 | 1.815 |
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