spindle thread size

[feufeu]

hi all,
i've a question; what is the spindle thread size? mine is a little worn and i would like to re-thread.
thks.

[oldspert]

I see you are from France. Since most of the European community uses the metric thread size, it might be hard to find a die to chase the threads on your spindle, whatever size it is.
Ed

[Big hammer]

I found 3/4-16 on Bratton’s online catalog

[Y-Blockhead]

The Front spindle thread size is ¾-16.

[feufeu]

Thank's to all. No it's not too hard to find dies with amazon and aliexpress

[Fullraceflathead]

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You can also try using a special thread file they are available on the internet.

[JayJay]

As Flathead suggests, I would try a thread file first and be reluctant to “chase” with a threading die. Threading dies remove metal, and you are not trying to remove metal, just push it back to where it belongs. There are special thread chasing dies available for this purpose, but they can get a bit harder to find in larger sizes. I found several in this size on the river store like this one https://www.amazon.com/dp/B00BEZVOGE...9kZXRhaWw&th=1.

[feufeu]

Thanks, it's good idea. am gonna search this part.

[Synchro909]

11/16 NF thread is also 16 TPI. That means you should be able to cut a 11/16 thread over the old 3/4-16 thread and end up with a new but 1/16 inch smaller thread. Finding a 11/16 nut in Europe might be a challenge but I'm sure one of our American friends could help. If not, I know a nut and bolt place here that will have them. I could send you one or two if you need. They will not be slotted like the originals so you might have to use two and lock them together.

[Bruce of MN]

That size seems to be a flanged lug nut size and pretty rare without the flange. McMaster Carr, Fastenal, and Grainger don't have them. I also found this, but it is a Gr 2 thin jam nut and US$11 plus shipping for two. The lug nuts also seem to be Gr 2 and are more money.

[The Master Cylinder]

Originally Posted by Bruce of MN

That size seems to be a flanged lug nut size and pretty rare without the flange. McMaster Carr, Fastenal, and Grainger don't have them. I also found this, but it is a Gr 2 thin jam nut and US$11 plus shipping for two. The lug nuts also seem to be Gr 2 and are more money.

I would assume he would need two of the jam nuts per side then?

[Ordsgt]

They make a thread restorer tap and die that does not cutter deeper in the existing thread just clean it up. I got my set on Amazon . They worked great for me

[Synchro909]

Guys, I realise a 11/16 NF nut is a fairly rare beast but any half way competent machinist would be able to make one or two AND make them with slots for a split pin.
An alternative would be to use say, a 17mm nut.

[Y-Blockhead]

Originally Posted by Synchro909

11/16 NF thread is also 16 TPI. That means you should be able to cut a 11/16 thread over the old 3/4-16 thread and end up with a new but 1/16 inch smaller thread.

If it were mine, I wouldn't. Chase the threads with a ¾-16 thread chaser and it will be fine. Not like you are going to torque it to 100 ft-lbs, just cleaning up the threads

[rotorwrench]

Thread files are common in both fine thread and course here in the states. One file will have 8 different thread per inch file surfaces. I think one is for smaller thread per inch and the other is for larger tpi sizez.

[feufeu]

Hi all,
finally I refreshed the thread with a #16 file. and it's OK.
Thanks to all! this forum is cool!