Socket Head Cap Screw, Head Style Standard, Alloy Steel, Finish Black Oxide, Thread Size 3/4-10, Drive Type Hex Socket, Drive Size 5/8 In, Decimal Equivalent 0.625 In, Thread Type UNC, Thread Style Fully Threaded, Thread Direction Right Handed, Length under Head 1 1/4 In, Thread Length 1 1/4 In, Head Height 0.750 - 0.740 In, Head Dia 1.125 - 1.107 In, Class 3A, Rockwell Hardness RC 38-43, Min Tensile Strength 170, 000 PSI, Meets/Exceeds ASTM A574/ANSI B 18.3, Package Quantity 25 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