Thread locker. Im not talking about typical loctite. They might make it, though.
What is the stuff called that is painted on a screw head, usually blue in color, to identify if the screw moved at a later inspection causing a shear in the paint?
Can think of it, cant find the right search words to even google it.
We have seven mechanics in our shop right now, and we have seven colors of torque seal...each mechanic has to use their own color so they know who done it.