WANTED: Half nut for Triumph

[Lucius1958]

After examining the half nut on my Triumph A, I suspect the threads may be worn. Would like to find a good replacement (at least for purposes of comparison with the old one). This is a single piece, to go with the later horizontal carriage on the machine. Any leads?

- Bill

[edisonclassm]

Lucius,
I am in the process out of my own necessity, of producing half nuts that will work properly. The originals had a "butress" thread to them. New half nuts that are being sold today by various suppliers are using a 60 degree thread which doesn't work well in pushing the carriage forward. They are not much better than the old worn out one. It will be a few weeks until they are done so I will contact you when they are ready.

[epigramophone]

Will these new half nuts be single or twin?
My Triumph Model A, destined for the British market, has the single half nut which is showing signs of wear.

Roger.

[edisonclassm]

I will have both sizes.