Lock Nut, Finish Plain, Hex Height 15/64 in, Hex Type External Tooth Lock Washer, Hex Width 7/16 in, Lock Type Lock Nut with External Tooth Lock Washer, Material Stainless Steel, Material Grade/Class 18-8, Pack Size Small Pack, Rockwell Hardness -, System of Measurement Inch, Thread Direction Right Hand, Thread Size 1/4 In.-28, Package Quantity 50