Retaining Ring External 0.025 in Thk PK100 System of Measurement Inch Location Style External Thickness 0.025 in Fits Shaft Diameter 13/32 in For Bore Diameter 3/8 in Fits Groove Diameter 0.382 in Fits Groove Width 0.029 in Fits Groove Depth 0.012 in Free Inside Diameter 0.366 in Clearance Diameter 0.61 mm Material Steel Finish Black Phosphate Material Grade/Class Ungraded Tensile Strength 120 000 psi Ring Type External Retaining Ring Material Quality Standards ASME