Slotted Hex Head Self-drilling Tapping Screws with Collar
DIN 7504 (L) - 1995 开槽六角带介（华司）钻尾自攻钉
See all versions and complete specifications: Slotted Hex Head Self-drilling Tapping Screws with Collar — Full Specification Page
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ST2.9 | 1.3 | 1 | 5.32 | 5.96 | 3.4 | 0.6 | 8.3 | 0.5 | 5.5 | 7.6 | 3 |
| ST3.5 | 1.4 | 1.2 | 6.78 | 7.59 | 4.1 | 0.8 | 8.8 | 0.6 | 7 | 8.1 | 3.6 |
| ST4.2 | 1.8 | 1.6 | 9.78 | 10.95 | 5.9 | 1 | 13.5 | 0.9 | 10 | 12.2 | 5.3 |
| (ST3.9) | 1.8 | 1.6 | 7.78 | 8.71 | 5.4 |
Request detailed technical specifications, material certifications, and availability information for your application requirements. Our engineering team can provide product recommendations, custom specifications, and technical documentation.
| 1 |
| 11 |
| 0.8 |
| 8 |
| 10 |
| 4.8 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.