Self-Tapping Screw Pozi Compatible Pan Head. Head: Pozi Compatible Pan Head. Finish: Zinc Plated. Self-Tapping Screw Thread. Predominately Used In Engineering Trades On Sheet Material. Now Widely Used On Diy Ironmongery Electrical And Plumbing Applications. Pozi Compatible Drive Head. Designed To Self-Thread In To Thin Sheet Material Of All Types (Pilot Drill Required Using High Speed Twist Drills). Pan Head Has A Flat Under Head Surface Which Allows The Screw To Lay Flat On Sheet Material Reducing Deformation.PTDFORDIRSTPP110ZP