[Shop-talk] Lamp question

[John T. Blair]

At 09:11 PM 7/17/2008, Karl Vacek wrote:

>Lamps usually use a running pipe thread, like the 1/8" Iron Pipe 
>(that's what the IP stands for) that is most typical today.
>
>What you had sounds like it *might* be 1/4" pipe.  it has a major 
>diameter of 0.540 - just over 1/2", though its pitch is 18 TPI 
>rather than the 20 pitch you tried.
>
>There're also a (fairly rare) 3/8" pipe size that's occasionally 
>encountered in lamps or elsewhere - like old electrical stuff.  Also 18 TPI.
>
>An old hardware store or a good lamp repair shop should be able to 
>fix you up - or Google it...

>Karl,


Thanks for the info.  That's what I was looking for.

John


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