Retaining Ring Internal 0.042 in Thk PK50 System of Measurement Inch Location Style Internal Thickness 0.042 in Fits Shaft Diameter Not Applicable For Bore Diameter 7/8 in Fits Groove Diameter 0.959 in Fits Groove Width 0.046 in Fits Groove Depth 0.029 in Free Outside Diameter 1 in Clearance Diameter 0.62 in Material Steel Finish Zinc Plated Material Grade/Class Ungraded Tensile Strength 150 000 psi Ring Type Housing Ring Clearance Diameter Type Expanded