Keyless Bushing Flange Type Not Applicable For Bore Diameter 5/8 in Keyless Bushing Type Single Nut Locking Assembly Material Steel Outside Diameter 1 in Overall Width 1.125 in System of Measurement Inch Finish Oil Dipped Hub Contact Pressure 16 084 psi Maximum Transmitted Torque 1 184 ft-lb Outside Diameter Tolerance +/-0.0015