Truss rod threading?

[Wiker]

Can anyone confirm the right threading for new/current style truss rods?
I have a 10-32 threading die, but that is not the right size. 10-32 is for the old style rods.
As far as I found out the new rods use 8-32. Right?

I have a German source for threading dies, and they only list them as UNC/UNF #. (inox-schrauben.de if anyone should need it)
I’m not familiar with the American sizes, and tried to figure out the numbers. As far as I understand 8-32 = UNC #8 and 10-32 = UNF #10. Did I get that right?

I was hoping to find 1” diameter dies. Does any one have other sources (that ship internationally)? I tried smallparts.com, but only get a message saying they "don’t ship this part to my location".

[cjj]

Google is your friend!

Here's just one chart that lists thread sizes along with UNC/UNF designations:
http://www.efunda.com/designstandards/s ... nified.cfm

8-32 in UNC #8 (UNC means unified coarse thread, UNF is unified fine)

As for a place to buy all sorts of machining tools, bits, etc., I've had good luck with Enco:
http://www.use-enco.com/CGI/INSRHM

Decent quality at good prices and they say they will ship anywhere in the world. But shipping from the U.S. could get expensive. Here's their page on international ordering:
http://www.use-enco.com/CGI/INPAGE?PMPA ... tional.htm

[jingle_jangle]

Try www.mcmaster.com

[Wiker]

Thanks guys. Those two shops seems to have what I need – and a lot more

Yes cjj I did Google, and found that and other tables. But for a metric thinker, all those number were confusing, and I just wanted confirmation that I got it right before ordering anything.

[cjj]

Yeah. I wish we had gone metric way back in the '70s when they told us we were going to convert. I never could figure out why we stopped. Now here in the U.S. you end up with all sorts of things that have a mixture of both. Talk about confusing...

[johnhall]

You didn't ask specifically but I think your question is related to the UNC vs. UNF designation.

In the American system the first number is the diameter, i.e #8 or #10, while the -32 refers to how many threads cut per inch. The UNC refers to coarse threads, like 10-24, while the UNF, refers to fine, as in 10-32, with the idea that more thread allows for finer (or tighter) adjustment.

[Wiker]

You didn't ask specifically but I think your question is related to the UNC vs. UNF designation.

In the American system the first number is the diameter, i.e #8 or #10, while the -32 refers to how many threads cut per inch. The UNC refers to coarse threads, like 10-24, while the UNF, refers to fine, as in 10-32, with the idea that more thread allows for finer (or tighter) adjustment.

Aha, thanks. It starts to make more sense now. One learns something every day.
My initial problem was just that the German source only specified UNC no.6, UNF no.6, UNC no.8, UNF no.8 etc., and I had no idea what those referred to.
But now I know UNC#8=8-32 and UNF#10=10-32.

[jingle_jangle]

Yeah. I wish we had gone metric way back in the '70s when they told us we were going to convert. I never could figure out why we stopped. Now here in the U.S. you end up with all sorts of things that have a mixture of both. Talk about confusing...

...my '67 Sunbeam had UNC, UNF, Metric, and Whitworth fasteners. It took a lot of wrenches to work on that little nasty. But the factory tool kit came with a 4" King Dick, so everything was covered:

vintage-king-dick-4-adjustable-spanner-wrench_160519515769.jpg

[cjj]

I had an Austin-Healey years ago that was like that. Fun car, but not fun to have to dig through the tool box 3 times to find the right wrench...

Anyway, you'd think that by now, things could have standardized. Well, at least you don't come across Whitworth sizes on modern stuff so the tool box search is a bit faster...

[jingle_jangle]

Humph. You know, of course, that Rick truss rod nuts are Whitworth-sized: BSW 1/16.

Don't use BSW 1/4--that's for cylinder head bolts. Sometimes.