[header] How to lock wire drilled head bolts [title] Decide the length. [step] The length of the piece of wire to be used is determined by the distance between the bolts that need to be lock wired. [title] Cut the length. 
[step] The wire should be cut to a length that is a little bit longer than twice that distance between the bolts. [title] Take the safety wire, thread one end of the safety wire through one of the holes and pull it back, and thread the other end through another hole in the same bolt and bring them together.