3.9 x 38Z Window Screw Phillips Head Zinc

TIMco's 120 range have a countersunk head with self-tapping thread and self-drilling tip. A self-drilling screw used for the construction of a PVCu window/door and for attaching hardware where there is a metal reinforcement. Product Features Countersunk Head Designed for countersinking into the substrate for a flush or recessed finish. Self Tapping Thread A common thread design mainly used in steel applications. Self Drill Point For drilling into metals without the needfor pre-drilling.