3/8-16X1 3/4 Coarse Thread Hex Cap Screw Grade 9 DFAR EcoGuard Gray/Silver 1,000 Hr Corrosion (Pack Qty 600) BC-3728CH9

Has greater tensile strength than a Grade-8. Designed for use in heavy machinery and equipment subject to harsh environmental and fatigue conditions AISI 8637 / 8640 / 8740 Medium Carbon Alloy Steel wire or 4340 Alloy Steel bar stock