Hexagon Head Tapping Screws (Type C, F and R)
JIS B 1123 - 2015 六角头自攻螺钉（C型,F型和R型）
See all versions and complete specifications: Hexagon Head Tapping Screws (Type C, F and R) — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ST2.2 | 1.1 | / | 2.1 | 5.4 | 2.3 | 1.1 | 5 | 0.1 | 2.6 | 4.82 | 2 |
| ST2.9 | 1.4 | 3.2 | 2.8 | 7.59 | 3 | 1.4 | 7 | 0.2 | 3.7 | 6.78 | 2.6 |
| ST3.5 | 1.8 | 4.3 | 3.6 | 8.71 | 4.1 | 1.8 | 8 | 0.25 | 5 | 7.78 | 3.6 |
| ST4.2 | 2.1 | 6.3 | 4.2 | 14.26 | 6 |
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| 2.1 |
| 13 |
| 0.4 |
| 7.5 |
| 12.73 |
| 5.2 |
| ST4.8 | 2.1 | / | 4.2 | 17.62 | 7.5 | 2.1 | 16 | 0.4 | 8 | 15.73 | 6.5 |
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