8-18X7/8 6 Lobe Pan Self Tapping Screw Type A B Fully Threaded Zinc (Pack Qty 5,000) BC-0814ABTP

For self starting in thin (.015-.050 thick) metal or resin-filled plywood. Recommended over a Type-A, particularly in brittle materialsYou may also like 1/4X1 3/4 Spring Pin Slotted Mechanical Zinc (Pack Qty 500) BC-25028PSZ.