Lock Nut Finish Zinc Plated Material Steel Material Grade/Class Grade A Thread Size 5/8 In.-11 Hex Width 15/16 in Hex Height 9/16 in Lock Type Serrated Dimensional Standards ASME B18.16.4 System of Measurement Inch Hex Type Flange Hex Thread Direction Right Hand Flange Diameter 1.281 in Pack Size Small Pack Package Quantity 25