Split Retaining Ring 0.065 in Thk PK100 System of Measurement Inch Location Style External Thickness 0.065 in Fits Shaft Diameter 5/16 in For Bore Diameter Not Applicable Fits Groove Diameter 0.156 in Fits Groove Width 0.075 in Fits Groove Depth - Free Outside Diameter 0.523 in Clearance Diameter 0.422 in Material Steel Finish Zinc Plated Material Grade/Class Ungraded Tensile Strength 47 000 psi Ring Type X-Ring Clearance Diameter Type Compressed Pack Size Small Pack