Product details:

Socket Flat Head Cap Screw, System of Measurement Inch, Flat, Basic Material Steel, Material Grade Alloy Steel, 1/2 In.-13, Length 1-1/2 In., Fastener Finish Black Oxide, Fastener Thread Type UNC (Coarse), Drive Type Hex Socket, Drive Size 5/16 In., Thread Style Fully Threaded, Thread Direction Right Hand, Thread Length 1-1/2 In., Head Height 0.251 In., Thread Dia. 1/2 In., Head Angle (Deg.) 82, Package Quantity 50FeaturesMin. Tensile Strength: 145,000 psiDrive