Bearing Lock Nut, Industry Standard Size N05, Bore Thread Size 0.969 In.-32, Nut Outside Diameter 1 9/16 in, Face Diameter 1 9/32 in, Nut Width 13/32 in, Bearing Face Maximum TIR 0.002 in, Nut Material Carbon Steel, Nut Material Grade AISI 1000/1200, System of Measurement Inch, Chamfer Angle 50 Degrees , For Use On Cams, Clutches, Gears, Pulleys, Sprockets, Locating Slot Width 0.178 in