Spiral Retaining Ring,0.042 In. Thk,PK10, System of Measurement Inch, Location Style External, Thickness 0.042 in, Fits Shaft Diameter 7/8 in, For Bore Diameter Not Applicable, Fits Groove Diameter 0.821 in, Fits Groove Width 0.046 in, Fits Groove Depth 0.027 in, Free Inside Diameter 0.814 in, Material Steel, Finish Plain, Material Grade/Class Ungraded, Tensile Strength 221,000 psi, Ring Type Spiral Retaining Ring, Material Quality Standards ANSI, Manufacturer Location Made in USA*