Socket Cap Screw, 5/16-18 x3, Pk 100

Socket Head Cap Screw, Head Style Standard, Alloy Steel, Finish Black Oxide, Thread Size 5/16-18, Drive Type Hex Socket, Drive Size 1/4 In, Decimal Equivalent 0.250 In, Thread Type UNC, Thread Style Partially Threaded, Thread Direction Right Handed, Length under Head 3 In, Thread Length 1 1/8 In, Head Height 0.312 - 0.306 In, Head Dia 0.469 - 0.457 In, Class 3A, Rockwell Hardness RC 38-43, Min Tensile Strength 180, 000 PSI, Meets/Exceeds ASTM A574/ANSI B 18.3, Package Quantity 100 RestrictionsNote: Zinc-plated socket head cap screws are available on DrillSpot.com . Thread lengths for partially threaded screws are minimum values; lengths may vary. Camcar/Kerr LakesideMeet ASTM A574/ASME B18.3 standards for Kerr Lakeside.Tensile strength: 180,000 psi up to 1/2"; 170,000 psi over 1/2" Rockwell hardness: (Camcar) RC38 to 43; (Kerr Lakeside) C39Alloy Steel Socket Head Cap ScrewsMeet ASTM A574/ANSI B18.3 standards.Thread class: 3A right-hand threads Black oxide finish