Retaining Ring External 4 mm Thk PK2 System of Measurement Metric Location Style External Thickness 4 mm Fits Shaft Diameter 115 mm For Bore Diameter Not Applicable Fits Groove Diameter 111 mm Fits Groove Width 4.15 mm Free Inside Diameter 108 mm Clearance Diameter 137.3 mm Material Steel Finish Plain Material Grade/Class Ungraded Ring Type External Retaining Ring Clearance Diameter Type Expanded Material Quality Standards DIN 471 Pack Size Small Pack