Loose gear box on bush hog

[mrmikey]

.........brand new locking nuts with the plastic on them

Said with respect Eddie, they are gr 5 not 8 and the threads will stretch if they're under any type of constant vibration.

 

[EddieWalker]

Said with respect Eddie, they are gr 5 not 8 and the threads will stretch if they're under any type of constant vibration.

Are you saying the nuts are grade five? I’ll have to double check. I bought them from McMaster Carr and thought the bolts and nuts where both grade 8 when I changed mine.

 

[mrmikey]

Are you saying the nuts are grade five?

Years....decades ago actually, I was to a fastener course. One of the few things I remember is that any locknut with the crimped/deformed section to hold the nylon insert was gr. 5 as gr. 8's couldn't be crimped like that. Supposedly that's why a gr.8 locknut is deformed by squeezing the taped part of the nut in.
Saying that, looking for this pic, they have gr. 8 with the nyloc insert so things have changed.
My apologies Eddie.

 

[Sawyer Rob]

We have a VERY good fastener place here, NO junk china bolts from them!

They insist that "crimped" lock nuts hold better than nylocks, (plastic) so when it really matters, all I will use is crimped nuts AND like on my rotor blades, I also use loc-tite along with them.

SR

 

[Alan W.]

All I know is the nyloc nuts are as tight as ever and it has been 5 years or better since I changed to them.

 

[Williy]

Use a #8 bolt with a wide nut drill small hole and use
a clip similar to this:

willy

 

[SPYDERLK]

Just tighten it up extremely tight! It wont move. It wont loosen.