- hardened steel AISI 1022
- Ruspert surface treatment consists three different layers: metallic zinc layer, a high-grade anticorrosion chemical conversion film and baked ceramic surface coating
- 1000 hours in salt spray test (MFT1000)
- corrosion class C3
- for indoor and outdoor use
- self-drilling, cutting ribs under head
- waxed for reducing friction
- the cutting point prevents material splitting
- small head screws drive in quickly and give a nicer finish
- countersunk head TX20
- size Ø 4,2 x 45 mm
- thread length 24,0 mm (partial thread)
- head diameter Ø 7,2 mm
- 250 pcs / package
