Retaining Ring,Internal,0.025 In. Thk,PK50, System of Measurement Not Applicable, Location Style Internal, Thickness 0.025 in, Fits Shaft Diameter Not Applicable, For Bore Diameter 3/8 in, Fits Groove Diameter 0.397 in, Fits Groove Width 0.029 in, Fits Groove Depth Not Applicable, Free Inside Diameter Not Applicable, Free Outside Diameter 0.415 in, Clearance Diameter 0.375 in, Material Steel, Finish Plain, Material Grade/Class Ungraded, Tensile Strength Not Applicable, Ring Type Retaining Ring