Lock Nut Finish Black Oxide Material Steel Material Grade/Class Class 10 Thread Size M36-4.00 Hex Width 55 mm Hex Height 36 mm Lock Type Nylon Insert Dimensional Standards DIN 985 System of Measurement Metric Hex Type Standard Hex Thread Direction Right Hand Insert Material Nylon Pack Size Small Pack Resistance Properties Chemical Resistant Impact Resistant Temperature Resistant Vibration Resistant Rockwell Hardness C27 to C35 Thread Pitch 4 mm