4-24X1/2 Square Flat Self Tapping Screw Type A B Fully Threaded Zinc (Pack Qty 10,000) BC-0408ABQF

Square Flat Self Tapping Screw Type A B Fully Threaded Zinc

For self starting in thin (.015-.050 thick) metal or resin-filled plywood. Recommended over a Type-A, particularly in brittle materials