Keyless Bushing Flange Type Flanged For Bore Diameter 5/8 in Keyless Bushing Type Multi-Screw Locking Assembly Material Steel Outside Diameter 1 3/16 in Overall Width 0.964 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 29 546.452 psi Maximum Transmitted Torque 86 ft-lb Outside Diameter Tolerance +0/-.002 in