5/16-12X2 1/2 Slotted Indented Hex Washer Self Tapping Screw Type AB Fully Threaded Zinc (Pack Qty 600) BC-3140ABSW

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 3/8X3/4 Medium, Standard Duty Coil Pin Plain Steel And Oil (Pack Qty 1,000) BC-37512PCM.