C-Style Ring System of Measurement Inch Location Style External Thickness 0.025 in Fits Shaft Diameter 5/16 in For Bore Diameter Not Applicable Fits Groove Diameter 0.276 in Fits Groove Width 0.029 in Fits Groove Depth 0.018 in Free Inside Diameter 0.27 in Free Outside Diameter 0.376 in Clearance Diameter 0.39 in Material Stainless Steel Finish Plain Material Grade/Class Not Graded Tensile Strength Not Applicable Ring Type C-Style External Ring Thickness Tolerance +/-0.002 in