Product details:

Hex Head Cap Screw, System of Measurement Inch, Basic Material Steel, Material Grade Grade 8, Fastener Finish Yellow Passivated, Dia. /Thread Size 5/16 In.-18, Fastener Length 1 3/4 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), Fastener Thread Style Partially Threaded, Fastener Industry Standards ASME B18.2.1, Head Type Hex, Min.