O.S. Max .21 prop nut thread ?

[riggerman]

Hi all what thread dia and pitch is the prop shaft on the o.s. .21 im guessing its metric coming from Japan . I need spare prop nuts the lhs wants $10 a nut i was thinking ss nylon lock nut once i know thread size and pitch. Regards Andris Golts.

 

[Grimracer]

M4

 

[LarryConrad]

Wheel nut on a lot of 1/10 scale off road cars are m4.

 

[Jerry Dunlap]

I haven't used a prop nut on my O.S. 21 OB in years. Mostly because I keep loosing the one that comes with the engine. I just slip a piece of tight fitting fuel tubing over the threads. Not saying it is a great idea, but I haven't lost a prop.

JD

 

[riggerman]

Thanks to all for the information. Regards Andris Golts.