Hex Nut, Hex Type Heavy Hex, Finish Plain, Material Grade/Class Grade 2H, Material Alloy Steel, Thread Size M39x4.00, Hex Width 39 mm, Hex Height 39 mm, Dimensional Standards ASME B18.2.4.6M, Material Quality Standards ASTM A194, System of Measurement Metric, Thread Direction Right Hand, Industry Standards ASTM A194M, Pack Size Not Applicable, Tensile Strength Not Applicable, Thread Fit 2B, Thread Type Coarse