Inch, Step Bolt, Steel, Material Grade A307B, Fastener Finish Plain, Dia./Thread Size 5/16 In.-18, Fastener Length 2 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), Fastener Industry Standards ASME B18.5, Head Dia. 1.000 in to 1.031 in, Head Height 11/64 in, Square Height 0.156 in to 0.187 in, Square Width 0.307 in to 0.324 in, Tensile Strength 60,000 psi, Package Quantity 50
Machine Screw, Head Type Flat, Material Steel, Finish Zinc Plated, Drive Phillips, Thread Size 5/16 In.-18, Fastener Length 2 in, Head Width 0.579 in, Head Height 0.597 in, Drive Size #4, Tensile Strength 60,000 psi, Dimensional Standards ASME B18.6.3, Pack Size Bulk, Minimum Thread Length Not Applicable, Type Standard Machine Screw, Washer Outside Diameter Not Applicable, Washer Thickness Not Applicable, Maximum Head Width 0.579 in, Minimum Head Width 0.556 in, Maximum Head Height 0.597 in