8-18X5/8 Unslotted Indented Hex Washer Serrated Self Tap Screw Type AB Full Thread Zinc (Pack Qty 9,000) BC-0810ABWS

For self starting in thin stainless sheet when corrosion resistance is requiredYou may also like 5/16-18X2 1/2 Coarse Thread Flat Socket Cap Screw Plain (Pack Qty 100) BC-3140CSFL.