Retaining Ring,Internal,1.5 mm Thk,PK50, System of Measurement Metric, Location Style Internal, Thickness 1.5 mm, Fits Shaft Diameter Not Applicable, For Bore Diameter 38 mm, Fits Groove Diameter 40 mm, Fits Groove Width 1.6 mm, Free Outside Diameter 40.8 mm, Clearance Diameter 26.4 mm, Material Steel, Finish Plain, Material Grade/Class Ungraded, Ring Type Housing Ring, Clearance Diameter Type Compressed, Material Quality Standards DIN 472, Pack Size Small Pack