5/16-18X2 1/2 Coarse Thread Hex Cap Screw Grade 5 Zinc (Pack Qty 600) BC-3140CH5O

Has greater tensile strength than a Grade-2. Yield-to-tensile ratio is the lowest of all heat treated steels Grade-5 cap screws shall be heat treated, oil or water quenched, at the option of the manufacturer, and tempered at a minimum tempering temperature of 800°FYou may also like 4-20X5/8 6 Lobe Pan Thread Rolling Screws 48-2 Fully Threaded 18-8 S/S Passivated and Wax (Pack Qty 5,000) BC-0410LTP188.