Retaining Ring Internal 0.042 in Thk PK50 System of Measurement Not Applicable Location Style Internal Thickness 0.042 in Fits Shaft Diameter Not Applicable For Bore Diameter 15/16 in Fits Groove Diameter 1 in Fits Groove Width 0.046 in Fits Groove Depth Not Applicable Free Inside Diameter Not Applicable Free Outside Diameter 1.041 in Clearance Diameter 0.9375 in Material Steel Finish Plain Material Grade/Class Ungraded Tensile Strength Not Applicable Ring Type Retaining Ring