changeing thread size? thread adaptor-adaptor?

cpileri

July 31, 2002 01:30

Trying to get a 1/2 x32 threaded gizmo on a 1/2 x20 threaded pipe...

Is there such a device that can screw on to a 1/2 x20 threaded pipe/barrel/stick which is threaded 1/2 x32 on the other end, effectively changeing the 1/2x20 to a 1/2x32 threaded end?

Should I be looking in Home Depot? (only half-kidding)

thanks,
C-


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  BT99

  July 31, 2002 06:47

  First thought that a helicoil would do this, but I don't think you will find one in 1/2 x 32. Now I think you have two options.
  First would be to find a good gunsmith or machinist. On the stud you want to turn in, have it machined undersize and have a sleeve silver soldered on and then thread the sleeve to 1/2 x 32. The other option would be to take the hole you want to thread into and make it over
  size and thread it for a helicoil of a common thread pitch with an inside pitch of the one you have. Either one is going to be a little
  bit of work, but can be done.

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  cbxjeff

  July 31, 2002 07:06

  You have a problem! First you don't have a 1/2-20 threaded pipe. I assume you meen a 1/-20 threaded tube or rod. There is a big difference. The type of adapter you need will probably have to be custom made. In aluminum, this wouldn't be terribly expensive unless you are talking about the end of a barrel. Then concentricity is a real (more expensive) issue. If you would like to talk about it more, e-mail me.
  
  cbxjeffIt's too late for me, save yourself.

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  v35

  July 31, 2002 14:37

  Try D.A.Q., RR1, Box56B,Goodson, Mo 65659
  He makes these precision threaded adaptors.
  Hopefully he's still in business.

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