Worth recutting the thread on a worn anode fixing stud?

[Stooriefit]

The thread on my MGDuff M10 anode fixing stud is worn and is going to have to be fixed this winter - I barely got the nut to stay on the thread before going afloat. Anyway the question I'd appreciate views on is should I replace the bolt (not overly expensive but a hassle to get at) or is it possible to simply recut the thread using a die set? The recut would result in a smaller diameter stud on the underwater side - going from M10 to M8.

Thanks

 

[earlybird]

How well is the bolt anchored at its head? Re-threading as you suggest will put a considerable turning moment on the bolt which might break the sealant.
What you propose is only really a stop-gap. I'd replace the bolt, that will need to be done before too long anyway.

 

[VicS]

The thread on my MGDuff M10 anode fixing stud is worn and is going to have to be fixed this winter - I barely got the nut to stay on the thread before going afloat. Anyway the question I'd appreciate views on is should I replace the bolt (not overly expensive but a hassle to get at) or is it possible to simply recut the thread using a die set? The recut would result in a smaller diameter stud on the underwater side - going from M10 to M8.

Thanks

Time to fit new studs . ....... job done!

.

 

[PlankWalker]

I cleaned up my rusty studs using a home made die nut,
using a nut and a rat tail file, I filed 3 grooves in the thread, it cleaned up the studs a treat.

 

[penberth3]

I cleaned up my rusty studs using a home made die nut,
using a nut and a rat tail file, I filed 3 grooves in the thread, it cleaned up the studs a treat.

Very good, but the OP has a different problem.

 

[Stooriefit]

Thanks for the views and the kindness for not calling me a lazy git! Think it will be the new anode - I hadn't though of the possibility of the anode turning whilst doing the cutting so thanks to early bird.

 

[PabloPicasso]

Replace with new, then you can sleep easy

 

[PeterWright]

I cleaned up my rusty studs using a home made die nut,
using a nut and a rat tail file, I filed 3 grooves in the thread, it cleaned up the studs a treat.

If the nut will hardly hold onto the rusty stud, cleaning off more rust will make it even more likely to fall off, so your remedy will actually make the OP's problem worse. As others have said, it's time for new studs.