Agreed , the 55/60/27 inclusive are a major trap for most people , even suppliers struggle with this .
Need a good thread gauge and Vernier caliper are a must .
On the USA only SAE thread's , yes you are right but I would say pre 1990 all USA gear was using SAE , only now the 'Designed" and like our food here in OZ , made from local and imported ...........
Ingrediants .....
A world I find obscene .
Full of lies .
Brian.
Quote:
Originally Posted by AndrewJ
Gday Brian
Nup, but as i noted, most US "astro" gear is UNC,
so its easy enough to get.
Its also why i have a box full of different taps and dies ,
and also reverse engineered the thread cutting gears on my lathe
so i can cut just about anything i want.
The mainly annoying bit is swapping 55 and 60deg inserts based on thread wanted.
Andrew
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