Lock Nut, Finish Zinc Plated, Material Steel, Material Grade/Class Class 5, Thread Size M8-1.25, Hex Width 13 mm, Hex Height 8 mm, Lock Type Nylon Insert, Dimensional Standards D985, System of Measurement Metric, Hex Type Standard Hex, Thread Direction Right Hand, Pack Size Small Pack, Rockwell Hardness C30, Package Quantity 100.