1/4-20X3 1/2 Coarse Thread Hex Cap Screw Grade 9 DFAR EcoGuard Gray/Silver 1,000 Hr Corrosion (Pack Qty 550) BC-1456CH9

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 stockYou may also like M10-1.5X25 DIN 6921 Class 10.9 Metric Flange Bolt Screw Non Serrated Black Phosphate (Pack Qty 400) BC-M1025BF10BP.