Slotted Mushroom Head Self-Tapping Screws [Table 18]
BS 4174 - 1972 开槽大扁头自攻钉 [Table 18]
See all versions and complete specifications: Slotted Mushroom Head Self-Tapping Screws [Table 18] — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4# | 8.15 | 0.086 | 0.303 | 5.36 | 1.22 | 7.7 | 2.18 | 1.12 | 0.321 | 1.88 | 1 |
| 6# | 11.38 | 0.118 | 0.425 | 7.2 | 1.52 | 10.8 | 3 | 1.55 | 0.448 | 2.62 | 1.27 |
| 8# | 14.55 | 0.150 | 0.546 | 9.52 | 1.9 | 13.87 | 3.81 | 2 | 0.573 | 3.38 | 1.62 |
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