Shaft Dia (In.) 2.5 +0/-.002 in Shaft Dia Tolerance Outside Dia (In.) 3.740 Overall Length (In.) 2.598 Hub Contact Pressure (PSI) 18822 Locking Bolt Quantity 10 M8 x 55 Bolt Size Withstand Temp (Deg. F) Dependent on Application Steel Material Oil Dipped Finish