5/16-9X1 3/4 Unslotted Indented Hex Washer Self Tapping Screw Type A Full Threaded Zinc (Pack Qty 900) BC-3128AW

A thread forming tapping screw with wider spaced threads than a Type AB and a gimlet point For self starting in thin (.015-.050 thick) metal or resin-filled plywood.You may also like 14-10X2 1/2 Phillips Flat Full Body 2/3 Thread Wood Screw Black Oxide and Oil (Pack Qty 700) BC-1440DPFB.