DIN 7504 N SCH is a specialized screw designed for drilling directly into metal, sheet metal, and other hard materials without pre-drilling. Its self-drilling tip allows the screw to penetrate materials easily, saving time and effort. The star-shaped cylindrical head provides secure tightening under high torque and minimizes slipping during installation. Made from stainless steel or coated steel, these screws are resistant to corrosion, ensuring durability. Commonly used in roofing, metal profiles, and light structural applications, they combine drilling and fastening in one step, speeding up assembly processes while providing a strong, reliable grip.
| Boy/ Ø | ST2,9 | ST3,5 | ST3,9 | ST4,2 | ST4,8 |
|---|---|---|---|---|---|
| dp | 2,3 | 2,8 | 3,1 | 3,6 | 4,1 |
| dk max. | 5,6 | 6,9 | 7,5 | 8,2 | 9,5 |
| k max. | 2,2 | 2,6 | 2,8 | 3,05 | 3,55 |
| ✦ | P1 | P2 | P2 | P2 | P2 |