External Light Duty Spiral Ring System of Measurement Inch Location Style External Thickness 0.015 in Fits Shaft Diameter 3/8 in For Bore Diameter Not Applicable Fits Groove Diameter 0.351 in Fits Groove Width 0.018 in Fits Groove Depth Not Applicable Free Inside Diameter 0.348 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 Light Duty Spiral Ring