Name
Black phosphating bugle head dry wall screw
Surface treatment:
black / black grey / grey phosphated/Zinc-plated
Specification
3.5*16,3.5*20,3.5*25,3.5*30,3.5*40.3.5*60,ect
Heat treatment:
Tempering, Hardening, Spheroidizing, Stress Relieving
Type
Common Nail, Screw Nail
Quality control
100%Inspection during production