Seld Drilling Screw
Hex Washer Head With EPDM Bonded Washer (Ruspert)
* Ruspert Coating - Super Anti-corrosion
   - 1st layer : a metallic zinc layer
   - 2nd layer : a high-grade anti-corrosion chemical conversion film
   - 3rd top layer : a baked ceramic top coating

Applications :
- For heavy duty purpose
- Metal deck to structural steel or bar joist
- Clip to structural or bar joist
- Longer length fasteners for sheet applications

Features :
- Engineered for fast drilling & smooth tapping with less effort