9/16-12X6 1/2 Coarse Thread Hex Cap Screw Grade 5 Zinc Made in USA (Pack Qty 75) BC-56104CH5O

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°F