Christ -
I was thinking of epoxying a long nut into the inside of the plastic lug nut in order to try to keep the threads "in place" :
Here are other bolts with edges that may just "lock themselves" into position :
Square Weld Nut
Spring Nut
Cage Nut
Found these pictures here :
Nuts Detail - Advance Bolts & Fasteners Sdn Bhd
If you keep staring, the world is a giant Lego bin,
!
CarloSW2