Lock Nut, Finish Zinc Plated, Material Steel, Material Grade/Class Grade 2, Thread Size 1 1/8 In.-7, Hex Width 1 11/16 in, Hex Height 59/64 in, Lock Type Nylon Insert, System of Measurement Inch, Hex Type Standard Hex, Thread Direction Right Hand, Insert Material Nylon, Pack Size Small Pack, Rockwell Hardness C28 Max.