Perhaps the noobiest question of them all. How do I lock a hex nut?

Building a flatpack and I can't screw the hex nuts on because the rubber seals get in the way. Can't seem to lock the allen wrench/key in either. Do I need a specific tool for this? I'm going spare.

Submitted August 07, 2015 at 05:33PM by Seamalicious http://ift.tt/1EdkLu1