5/16-12X2 1/2 Unslotted Indented Hex Washer Self Tapping Screw Type AB Fully Threaded Zinc An (Pack Qty 300) BC-3140ABW

For self starting in thin stainless sheet when corrosion resistance is requiredYou may also like 1/4-20X3 1/2 Phillips Flat Thread Cutting Screw Type F Fully Threaded 18-8 Stainless Steel (Pack Qty 600) BC-1456FPF188.