12-8X4 1/2 Bugle Square Recess Course Thread Type 17 Point Deck Screw 18-8 Stainless Steel (Pack Qty 500) BC-12727DQG188

For self starting in thin (.015-.050 thick) metal or resin-filled plywood. Recommended over a Type-A, particularly in brittle materials Screws shall be quenched in liquid and then tempered by reheating to 650°F minimum