6-20X1/4 Slotted Ind Hex Washer Self Tapping Screw Type A B Full Thread Black Zinc (Pack Qty 10,000) BC-0604ABSWBZ

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 5/16-18X4 1/2 Coarse Thread Hex Cap Screw Grade 8 Zinc Yellow (Pack Qty 300) BC-3172CH8O.