Hexagon Head Self-Tapping Screws [Table 21]
BS 4174 - 1972 六角头自攻钉 [Table 21]
See all versions and complete specifications: Hexagon Head Self-Tapping Screws [Table 21] — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4# | 5.5 | 0.110 | 0.272 | 2.42 | 2.18 | 5.32 | 6.4 | 0.244 | 0.289 | 5.95 | 0.250 |
| 6# | 8 | 0.120 | 0.340 | 3.12 | 2.88 | 7.78 | 9.2 | 0.305 | 0.361 | 8.71 | 0.312 |
| 8# | 10 | 0.190 | 0.409 | 4.95 | 4.65 | 9.78 | 11.5 | 0.367 | 0.433 | 10.94 | 0.375 |
| 10# | 13 | 0.230 | 0.545 | 5.95 | 5.65 |
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| 12.73 |
| 15 |
| 0.489 |
| 0.577 |
| 14.28 |
| 0.500 |
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