Retaining Ring,External,0.025 In. Thk,PK50, System of Measurement Not Applicable, Location Style External, Thickness 0.025 in, Fits Shaft Diameter 11/32 in, For Bore Diameter Not Applicable, Fits Groove Diameter 0.321 in, Fits Groove Width 0.029 in, Fits Groove Depth Not Applicable, Free Inside Diameter Not Applicable, Free Outside Diameter 0.397 in, Clearance Diameter 0.3438 in, Material Steel, Finish Plain, Material Grade/Class Ungraded, Tensile Strength Not Applicable