Retaining Ring External 0.187 in Thk System of Measurement Inch Location Style External Thickness 0.187 in Fits Shaft Diameter 8 3/4 in For Bore Diameter Not Applicable Fits Groove Diameter 8.38 in Fits Groove Width 0.209 in Free Inside Diameter 8.181 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