Replacement Fan Mount Hub

Had an issue, or misplace your fan mount hub, that goes on the alternator and/or generator shaft?
 
Well, he is a replacement part. 
 
While no one should have an issue with this part, it is possible, if you don't torque the fan kit to the proper value, it could loosen, causing the entire assembly to wiggle on the shaft and put stress on the woodruff key slot.
 
Torque specification is 25 ft. lbs. for the 12 mm (18 mm socket) flanged nut with the spring/wave washer installed.