Bearing Lock Nut, Industry Standard Size AN38, Bore Thread Size 7.472 In.-8, Nut Outside Diameter 9 15/32 in, Face Diameter 8 25/32 in, Nut Width 1 1/8 in, Bearing Face Maximum TIR 0.006 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 0.735 in