Structural Bolt Heavy Hex Head Grade A325 Steel Finish Plain Thread Size 5/8-11 Overall Length 2 In Thread Length 1 1/4 In Thread Type UNC Thread Direction Right Hand Head Dia 1 1/16 In Head Height 25/64 In Tensile Strength 120 000 PSI Rockwell Hardness HRC 34 Max Meets/Exceeds ASTM A325 Type 1 Package Quantity 850