It is recommended to use a new bolt when reinstalling the HB. But I have to say on my first wp job I reused the bolt. By the time I got to my 3rd water pump I replaced it.
Tightening sequence is tighten to 74 ft. Lbs. 2nd step is 105 degrees.
James taught me how to mark and count the points to get to 105 degrees.
Mark a bolt point to the washer and balancer. Then count 3 points and a valley clockwise.tightwn the bolt to the mark and you have 105 degrees. The washer shouldn't turn after the 74ft lbs. But if it does you still have the mark on the balancer to follow.
The new style bolt (2011+) does not require the torque angle sequence, also I recommend using some moly lube on the faces of the washer with that bolt....or just buy the ARP bolt or Fluidampr bolt and diamond shim kit, and be done with it. Never replace the bolt again.