Lock Nut Finish Zinc Plated Material Steel Material Grade/Class Grade 5 Thread Size 5/8 In.-11 Hex Width 15/16 in Hex Height 49/64 in Lock Type Nylon Insert Dimensional Standards ASME B18.16.6 System of Measurement Inch Hex Type Standard Hex Thread Direction Right Hand Color Silver Insert Material Nylon Made in North America No Manufacturer Location Globally Sourced Pack Size Small Pack REACH Compliant Yes Removable No Rockwell Hardness C28 RoHS Compliant Yes