Retaining Ring Internal 4 mm Thk System of Measurement Metric Location Style Internal Thickness 4 mm Fits Shaft Diameter Not Applicable For Bore Diameter 165 mm Fits Groove Diameter 170 mm Fits Groove Width 4.15 mm Free Outside Diameter 174.5 mm Clearance Diameter 137.7 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