SJ 2500 - 1984 十字槽大扁圆头自攻钉（ST 2.2~ST 6.3）
See all versions and complete specifications: Cross Recessed Pan Head Tapping Screws — 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 | 1.72 | 2.9 | 2.05 | 1.75 | 1.1 | 6.9 | 4.6 | 1 | 6.4 | 0.1 |
| ST2.9 | 1.4 | 2.13 | 4.2 | 2.65 | 2.35 | 1.4 | 9.4 | 6.1 | 2 | 8.9 | 0.2 |
| ST3.5 | 1.8 | 2.83 | 6 | 3.6 | 3.2 | 1.8 | 12.9 | 8.4 | 3 | 12.2 | 0.2 |
| ST4.2 | 1.8 | 2.86 | 6.2 | 3.9 | 3.5 |
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| 1.8 |
| 14 |
| 9.1 |
| 3 |
| 13.3 |
| 0.25 |
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