Thread Repair File

[Copper Lincoln]

Got to find a thread repair file to repair threads on a JD 50 axle where the cast iron nut holds the bull gear onto the axle. Can anyone tell me what that axle thread size is, or a part # for the thread file I need? Thanks.

 

[Mike M]

Those threads are so big a small triangle file works great on them.
I do those all the time. They get buggered from driving them apart and also the cotter pins seem to burr over the edge of the holes from over time.