Keyless Bushing Flange Type Not Applicable For Bore Diameter 2 13/16 in Keyless Bushing Type Single Nut Locking Assembly Material Steel Outside Diameter 3 7/8 in Overall Width 4.25 in System of Measurement Inch Finish Zinc Plated Hub Contact Pressure 4 679 psi Maximum Transmitted Torque 1 453 ft-lb Outside Diameter Tolerance +0.003 in