8-18X5/8 Phillips Indent Hex washer Serrated Self Tap Screw Type AB Full Thread Zinc (Pack Qty 9,000) BC-0810ABPWS

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 M6X50 Metric Pin Slotted Plain ISO 8752, Thermal Black (Pack Qty 1,000) BC-MI0650PS.