5/16-18X1 1/2 Slotted Indented Hex Washer Thread Cutting Screw Type 1 Fully Threaded Zinc And (Pack Qty 500) BC-31241SW

May be used in steel sheets, structural shapes, special alloy steels, cast iron, brass or plastics AISI 1016 - 1024 or equivalent steel Screws shall be quenched in liquid and then tempered byYou may also like 1/4-28X6 Fine Thread Hex Cap Screw Grade 8 Zinc Yellow Made in USA (Pack Qty 350) BC-1596CH8O.