Retaining Ring External 0.025 in Thk PK10 System of Measurement Inch Location Style External Thickness 0.025 in Fits Shaft Diameter 7/16 in For Bore Diameter 13/32 in Fits Groove Diameter 0.412 in Fits Groove Width 0.029 in Fits Groove Depth 0.012 in Free Inside Diameter 0.395 in Clearance Diameter 0.66 in Material Stainless Steel Finish Plain Material Grade/Class 18-8 Tensile Strength 120 000 psi Ring Type External Retaining Ring Clearance Diameter Type Expanded