Metric Basic External DIN471 System of Measurement Metric Location Style External Thickness 1.5 mm Fits Shaft Diameter 31 mm For Bore Diameter Not Applicable Fits Groove Diameter 29.3 mm Fits Groove Width 1.6 mm Fits Groove Depth 0.85 mm Free Inside Diameter 28.6 mm Free Outside Diameter Not Applicable Clearance Diameter Not Applicable Material Steel Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type External Ring Thickness Tolerance +0.000/-0.060 mm