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- MazdaSpeed3
20,896 bought in June last year. Yup, lots a driving. Work is 30 mi away-5 times a week!
Bought July 2007; 63300 miles.
12,5xx in 2 years.. Suck it.
Have you tried a star-type lock washer? They tend to dig in really well.
I did think about those, but the only ones like that available to me were the kind that come attached to a nut already, and if I used that I would have had to cut the head off a long 1/4 20 and then grind down the leftovers
My 1/4-20 bolt has the flange style head with the grooves cut into it for a locking surface, coupled with a split type lock washer my DIY tow plate hasn't moved since I put it on since last October.