To satisfy the SVA height requirement,
I've a crossbar on my roll bar for mounting the top eyebolts for my harness. I've read somwhere that the bolts must have a couple of threads protruding from the nut. Anyone know if this is correct??

TIA, Ian.

i belive it is 2 threads showing through the nylon in the nut,dont forget the tube to stop the bar being crushed if you get what i mean