External Medium Duty Spiral Ring System of Measurement Inch Location Style External Thickness 0.031 in Fits Shaft Diameter 7/8 in For Bore Diameter Not Applicable Fits Groove Diameter 0.838 in Fits Groove Width 0.036 in Fits Groove Depth 0.019 in Free Inside Diameter 0.828 in Free Outside Diameter Not Applicable Clearance Diameter Not Applicable Material Stainless Steel Material Grade/Class 18-8 Tensile Strength Not Applicable Ring Type External Medium Duty Spiral Ring