Black Self Drilling Countersunk Screws Flat Head Carbon Steel Self Tapping Screw
Self Drilling Countersunk Roofing Screws With Tapping Screws Thread. Black Flake Zinc. BOLTS / SCREWS. GRUB SCREWS. Grub Screws. High quality screws made of black flake zinc plated steel and toISO 15482 standards.