I once made similar threads useable on a prop shaft for and Outboard boat. I went to sears and bought their fine set of jeweller type files and sat and filed and cleaned things up till the new nut I bought would thread on. Then I used Bearing loctite, or was it Thread restore? Torqued to spec and it worked fine. If the threads are totally stripped off you are done. This repair will likely be a one time deal too. As the next time you remove the nut the remaining threads will come with it. Your mileage will vary! Mark Price Oct 2004 12:35:30 -0400 >Hope someone can help here. I have a set of 3:54 gears that has some damage >to the threads on the pinion. Has anyone had a similar situation and fixed >this? If so, how? Because of it's hardened state, I am assuming it may be a >lost cause. Thanks for any help. > >Gary N > > > > >