Originally Posted by twinturbo
It's not needed at the rear as it can't rotate.
im pritty sure the iva tester will want to see them fitted and tight but i could be wrong.
i would have liked to see them if i was mot'ing a compnent like that when i used to test
only a matter of time before the vibration makes it get all slack
it is a big thread and has quiet a bit of free play movement a lock nut will keep the thread preloaded and frim
you can always cut down a full nut to a half nut if none are availble
(a full nut may even fit if there is room)