Worlds Car Spindles - What Thread?

[TheSpeedway]

Worlds Car Spindles - Anyone know what the thread is on these? Could it be 5/40?

[GoMachV]

5/40 but stay away from aluminum- you may not get them off

[TheSpeedway]

Thanks - The common slot car axle thread from the 60's.

[TheSpeedway]

I don't care for the nylon nuts as they are 4/40 being stretched when installed to 5/40.

I instead purchased some steel 5/40 lock nuts that I am going to use.
I will treat them nice and it shouldn't be an issue.

[jwscab]

the nylon nuts are perfectly adequate. the design is such that the threads are formed when you install them the first time, so the hole works for #4, 3mm and #5.

Steel nuts are much stronger obviously, but the lock portion of the nut is much much smaller so they have less 'locking' life in them.

[TheSpeedway]

Yeah.. I know how they work. I still don't care for them. I would have to say I don't want to have adequate nuts.