Case hardened, Piercing Point Screws For Fixing To Light Steel or Wood Studs Without Pre-Drilling Zinc, Yellow Zinc, Black & Grey Phosphated Available normal size #6 #7 #8 #10 thread diameter min. 3.4 3.75 4.05 4.7 max. 3.6 4 4.3 4.95 head diameter min. 8 8 8 8.8 max. 8.4 8.4 8.4 9.2 head height max. 0.8 0.8 0.8 0.8 radius min. 4 4 4 4
