This is the nicest crank pulley bolt we've seen! This is beautifully machined, the weird pattern in the pictures is a reflection of the LED's in our photo box.
 
The crankshaft pulley bolt is CNC machined from EN24T steel. The bolt is longer than standard to give a more positive location of the pulley on the crankshaft, with an in-built washer.
 
In place of the lock washer, we recommend to apply a drop of 27-01 thread lock and torque to 70lb/ft.