Need Help!- chasing threads

[ryanschmidt224]

Hello,
I got 2 pcs. built for and assembly i'm building...


The first piece is a stainless threaded rod.
The second is a brass threaded fitting.

(both pieces have a custom thread, aka I can't buy a tap and chase them)

I press the brass fitting into an aluminum plate and the threaded rod goes through.

The problem I am having is that when I press the brass fitting into the aluminum plate, the end of it is squeezing together and not allowing my rod to thread through it.

I am using a .002 press fit, I don't think i can get too much looser or the fitting will spin in the aluminum...

Does anybody have any tips on how to fix this?

Thank You
Ryan Schmidt

[PixMan]

Make your own tap and chase the threads.

What make you so sure you can't buy a tap? You'd be shocked at what is out there if you know where to look. Just what thread is it that you have?

[quazga]

Agreed.

Unless you're working on an alien spacecraft that crash landed in your backyard, you'll definitely be able to find the tap for that. Start by getting a tread gauge set and see what the thread is. =)

[neilw20]

It will almost certainly be in here...
http://www.goliath.com.au/pdf/catalogue.pdf
(too big to load in the forum)