[modeleng] Off topic a bit: UNF and UNC threads, thanks Harry, Jeff!

Hi there Harry, Jeff,

Many thanks for your help with this, it all makes sense now.

Yours,


Rich.

On Thu, 20 Oct 2005, R.L. Roebuck wrote:

> Hi there All,
>
> I'm used to what I would call 'normal' UNF and UNC thread designations,
> such as 1/2"*20 UNF, but I've got a few things on a drawing that don't
> make sense to me - I wonder if anyone could shed some light on them.
>
> I have a stud marked as being threaded 1/2-20 UNF-2A
>
> I have another stud marked as 3/4-16 UNF-2A
>
> I have a hole marked as 1/2-13 UNC-2B *  .75
>
> Does anyone know what the stuf after the UNF or UNC refers to?
>
>
> Yours,
>
>
> Rich.
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