I use 'Tracy Tools' sometimes, they're not too far from me......'The Tap and Die Company' in London are also very good and have a very extensive range..I've had a few 'oddities' from them over the years as well as the basic threads/sizes...Ian
['Neither of those companies have that size listed...']
Time to get to an Engineering shop probably, or find someone with a lathe and milling machine...This isn't a difficult problem to resolve if there's no tap available, as long as you have the thread specifications....Ian
If you want a tap and/or die 11/16" BSCY 26TPI they are available. LPR Toolmakers in Victoria/ Australia have them listed, Aprica brand for $88.90 (Aus). probably a long way from you but someone else must sell them.
Link below should be for the item, they also sell on Ebay. They have most sizes in 26 and 20 TPI. I have some of them and the quality seems okay.
I have found that a tap can be made for a clean up of a thread by using a bolt of the correct diameter.
First, thread a nut onto the bolt all the way to the head.
Cut three or four grooves along the length of threads, using a dremel or similar tool to the style of a standard tap.
Then unscrew the nut, which clears the burrs from the edges, and dress them off with a small file.
For cleaning up a female thread, it works well.
A more permanent tap can be made by threading a length of silver steel and treating it to the same grooves etc. Then heat until cherry red and cool in an oil bath to harden.
It can just make these little jobs much easier and more satisfying if you can tackle them yourself.
Darren
The only male thread that I've ever seen in 23/32" is the monkey-metal drive box. You won't make much of a chaser out of that ! Usually they're sacrificial. Far more likely to be damaged than the female thread.
I will make a simple tap for you to borrow.
I do not have the proper dimameter silver steel so will make it from what is lying around.
It will not be used much anyway.
