Retaining Ring,External,1.75 mm Thk,PK10, System of Measurement Metric, Location Style External, Thickness 1.75 mm, Fits Shaft Diameter 40 mm, For Bore Diameter 36.5 mm, Fits Groove Diameter 37.5 mm, Fits Groove Width 1.85 mm, Fits Groove Depth 1.25 mm, Free Inside Diameter 36.5 mm, Material Steel, Finish Black Phosphate, Material Grade/Class Ungraded, Tensile Strength 150,000 psi, Ring Type External Retaining Ring, Material Quality Standards DIN 471, Manufacturer Location Made in USA*