Standard Retaining Ring, External, Carbon Steel, Finish Black Phosphate, For Shaft Dia. 32 mm, For Bore Dia. -, Free I.D. 29.6 mm, Thickness 1.5 mm, Thickness Tolerance -0.060mm, Radial Wall -, Prongs -, Height -, Fits Groove Dia. 30.3 mm, Groove Dia. Tolerance -0.25mm, Fits Groove Width 1.6 mm, Fits Groove Depth 0.85 mm, Clearance Dia. (Compressed) -, Clearance Dia. Free O.D. -, Hole Dia. 2.5 mm, Tensile Strength (PSI) 150,000 psi, Rockwell Hardness RC47-54, Meets/Exceeds DIN471