Retaining Ring External 0.125 in Thk System of Measurement Inch Location Style External Thickness 0.125 in Fits Shaft Diameter 5 1/4 in For Bore Diameter Not Applicable Fits Groove Diameter 5.03 in Fits Groove Width 0.139 in Free Inside Diameter 4.927 in Material Steel Finish Plain Material Grade/Class Grade 1060/Grade 1090 Ring Type External Retaining Ring Pack Size Small Pack Manufacturer Location Globally Sourced Ring Sub-Type Standard