External Light Duty Spiral Ring System of Measurement Inch Location Style External Thickness 0.021 in Fits Shaft Diameter 1 in For Bore Diameter Not Applicable Fits Groove Diameter 0.958 in Fits Groove Width 0.026 in Fits Groove Depth 0.021 in Free Inside Diameter 0.949 in Free Outside Diameter Not Applicable Clearance Diameter Not Applicable Material Steel Finish Plain Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type External Light Duty Spiral Ring