DIN7504-K Hex Head Self-drilling Screw

Hex Head Self-drilling Screw

1. Standard: DIN7504-K;

2. Head: Hex;

3. Groove: none;

4. Surface: no burr, no crack and nice brightness;

5. Raw Material: bought from Group Company, with stable quality and completive price;

6. Processing: by cold-forging machines, together with precise moulds;

7. Length: 3mm to 100mm;

8. Other name: hex head roofing screw.