Drywall screws 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
