[sdiy] UNEF threads

[Simon Gatrall]

At 3:00 PM +0200 5/16/03, jhaible at debitel.net wrote:
>Simon,
>
>thanks for your answer!
>
>>  32 is the the number of threads per inch, and 2A is the thread class
>>  - basically how accurate the threads are.  The thread class isn't
>>  that essential for your purposes, but the 1/4-32 is.  1/4-32 UNEF-2A
>>  is a standard size, but no where near as common as 1/4-20.
>
>But just to be sure:
>If I have a "1/4 inch UNEF" thread (without further specifications),
>does this imply that it has these 32 threads per inch, or are there
>othere variations of 1/4 UNEF ?
>
>(Asuming that your example 1/4-20 isn't UNEF, but something else)

Sorry I wasn't more specific.

1/4-20 is UNC (coarse), 1/4-28 is UNF (fine) and 1/4-32 is UNEF 
(extra fine).  So yes, something that is called 1/4 UNEF should be 32 
threads per inch.
-- 
Simon Gatrall
gatrall at pacbell.net