Pulling Axles

[Don Coatney]

I also have been known to peen a thread or two when the job calls for it.

[Frank Elder]

I recall reading somewhere they were good for 3 times. Of course unless its something you had from new how would you know how many times.

Throw away after one use...torque value is shot.

Edited February 14, 2015 by Frank Elder

[Young Ed]

I had an older piece of farm equipment fail because the nylon lock nuts, which were quite old, came loose as the nylon had become brittle and no longer locked the nut in place.  As for repeat usage, I reckon this varies with nut size & quality of nylon.  I've seen larger nylon lock nuts that lose their effectiveness after one use, and smaller (under 1/4") nylon lock nuts that could be used repeatedly.  Since using the prevailing torque lock nut, I generally have opted to not use the nylon lock nuts, as the PTLNs are not as susceptible to failure from heat, age, or fatigue...on more than one occasion, I have converted a regular hex nut into a PTLN as a temporary solution as I had a bench vise and machinist's hammer available and needed to complete a project in a timely manner

 

That makes sense as I think I read it regarding my 10th scale RC cars. Most of them would have been #4.

 

Throw away after one use...torque value is shot.

 

No torque values in RC cars

[Frank Elder]

I like to use my nuts more than once too,  ,,I mean repurpose my fasteners for a different jobs!

[John-T-53]

Plus, the nylock nuts are usually grade 2 (weak). I'd get grade 5 nuts and heat treated lock washers and attach the pumpkin with those.

[Jim Shepard]

Good advice, JT...

[RobertKB]

When putting on the nuts/washers use a fair bit of oil resistant sealer right where the bolt comes through the housing. If you do not seal here, oil will work its way down the threaded bolts eventually and start dripping. I have had this experience! I always place sealant there and tighten the nuts down onto it.