Thread: nylex lock nuts washers or not

Are you using new nylock nuts every time?
They should be one use only IMO
They should also have washers under them I believe
Maybe you should try normal ht bolts and nuts + locktite
Regards
Phil

thanks for the reply, yea I use new ones each time, these drive shafts were fitted in mt isa for me. I was to hot and to lazy to do it myself
previous ones were ht steel with lock nuts ANDwashers, but washers were not fitted with the nylex, so I just followed in suit thinking they weren't needed, be interested to know which is the better nylex or the ht steel
cheers again.

Try deformed nuts they may be better.
Lindsay.

I use Nyloc and Loktite!

John

Just some info....

*Nylocs or rather "Nylon Inset Locknuts" should only be used once.
*shouldn't need any other locking such as using thread lock.

The more important part..
*Land Rover prop shaft retaining nuts and bolts are a 3/8 UNF thread, this includes new Defender TDCi (puma) models, the 3/8 UNF thread is also used on the diff carriers (non Salisbury diffs).

*The original 3/8 UNF nylon locking nuts Land Rover use are some non standard thickness.
*You can buy either thicker nuts or thinner nuts.
*In some applications such as Land Rover Discovery 2, the bolts on the transfer case end are too short too use the thicker nuts, so using the thinner nuts resolves this.
*The rear prop shaft on the transfer case on a Defender shouldnt (well not that I have seen) doesnt suffer the short bolt issue, so using the thicker nuts should be ok.

*You are not doing something silly such as using a Metric Fine nut are you?While I havent tried this and wouldnt have thought the thread pitch would be close enough for it to tighten up.

Pic below: Left 3/8 UNF thin nut, centre 3/8 UNF Land Rover nut, right 3/8 UNF standard thickness.

Its common for repairers *cough* dealers to re-use the nylocs, prolly because they dont know the nuts arent metric.

Regards
Daz
P.S Using a nylon locking nut that is too thick doesnt allow the thread to cut into the nylon part right at the end of the nut

Originally Posted by DazzaTD5

Its common for repairers *cough* dealers to re-use the nylocs, prolly because they dont know the nuts arent metric.

What's metric or otherwise got to do with not re-using nyloc nuts?

Originally Posted by Graeme

What's metric or otherwise got to do with not re-using nyloc nuts?

They get re-used because the 3/8 UNF isnt something most workshop would have or even realise that its not a metric thread.

They also get re-used as how many workshops carry a range of nylon locking nuts?

Also how many would then make a run to the local fastener place to match up the odd nut?

The bigger workshops, a trades person might go to his/her supervisor and ask for new nylon locking nuts and likely get told, we dont have them, just use loctite.

Regards
Daz

Few other things will cause such catastrophic damage if they come off. I would insist on new ones and then check they have been changed, or change them myself
Just my opinion though.