Socket Head Cap Screw, Standard, Alloy Steel, Black Oxide Finish, Thread Size M36 x 4mm, Drive Type Hex Socket, Drive Size 27mm, Thread Type Metric, Thread Style Partially Threaded, Thread Direction Right Hand, Overall Length 216mm, Length Under Head 180mm, Thread Length 84mm, Head Height 36mm, Head Dia. 54mm, Temp. Range (F) -50 to 550, Class 4g6g, Rockwell Hardness 40 to 43, Min. Tensile Strength (PSI) 180, 000, Meets/Exceeds ASTM A574, ANSI B18.3.1M