5/16-18X1 1/4 Slotted Indented Hex Washer Thread Cutting Screw Type 1 Fully Threaded Zinc And (Pack Qty 600) BC-31201SW

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 4-24X1/2 Phillips Pan Full Thread Self Drilling Screw Zinc (Pack Qty 10,000) BC-0408KPP.