ZORO SELECT U51108.031.0001 Serrated Lock Nut, 5/16"-18, 18-8 Stainless Steel,
Lock Nut, Finish Plain, Material Stainless Steel, Material Grade/Class 18-8, Thread Size 5/16 In.-18, Hex Width 1/2 in, Hex Height 9/32 in, Lock Type Serrated, Dimensional Standards IFI-145, System of Measurement Inch, Hex Type Flange Hex, Thread...