External Heavy Duty Spiral Ring System of Measurement Inch Location Style External Thickness 0.025 in Fits Shaft Diameter 15/32 in For Bore Diameter Not Applicable Fits Groove Diameter 0.443 in Fits Groove Width 0.029 in Fits Groove Depth 0.013 in Free Inside Diameter 0.439 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 Heavy Duty Spiral Ring