[modeleng] Off topic a bit: UNF and UNC threads

From: "R.L. Roebuck" <rlr20@xxxxxxxxxxxxxxxx>
To: modeleng@xxxxxxxxxxxxx
Date: Thu, 20 Oct 2005 14:29:28 +0100 (BST)

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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Follow-Ups:

[modeleng] Re: Off topic a bit: UNF and UNC threads
From: Harry Wade

[modeleng] Re: Off topic a bit: UNF and UNC threads
From: Jeff Dayman

[modeleng] Off topic a bit: UNF and UNC threads, thanks Harry, Jeff!
From: R.L. Roebuck

[modeleng] Second hand boilers
From: R.L. Roebuck

References:
- [modeleng] Replacable Tips
  - From: Clif Walker
- [modeleng] Replacable Tips now silver solder
  - From: Harry Wade
- [modeleng] Re: Replacable Tips now silver solder
  - From: Ron Head

[modeleng] Off topic a bit: UNF and UNC threads

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