Lock Nut Finish Zinc Plated Material Steel Material Grade/Class Grade 2 Thread Size 5/8 In.-11 Hex Width 1 1/16 in Hex Height 55/64 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 B68-C32 Package Quantity 10