5/16-12X3 Slotted Indented Hex Washer Self Tapping Screw Type AB Fully Threaded Zinc (Pack Qty 200) BC-3148ABSW

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 12-11X1/2 Phillips Pan Self Tapping Screw Type A Fully Threaded Black Oxide (Pack Qty 5,000) BC-1208APPB.