Straight pipe threads, need help

Straight pipe threads, need help
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Posted by: popethom ^®

04/08/2006, 21:00:53

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I need to machine an internal 2.5 - 8 straight pipe thread. It's the first time I've been exposed to this thread. I can't find any data pertaining to it. Can anyone help me.

I need to know the major dia, minor dia, pitch dia, thread form, and anything else that will help me machine it.

The thread is in a round tube, so I'd like to turn it. Can anyone give me a reason to thread mill it?

Thank you.

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Re: Straight pipe threads, need help Smile

Re: Straight pipe threads, need help -- popethom Post Reply Top of thread Forum

Posted by: Scooter ^®

04/13/2006, 15:42:49

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MACHINERY HAND BOOK, EDITION 23, HAS DATA ON BRITISH PIPE THREADS ON PAGE 1592. THREAD ROLLING, GRINDING,& MILLING CAN BE FOUND ON PAGES 1703 THRU 1733. ALL THIS INFO. IS UNDER SECTION FOR "THREADS AND THREADING".
HOPE THIS WILL HELP.
THANKS,
SCOOTER

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Re: Straight pipe threads, need help

Re: Straight pipe threads, need help -- popethom Post Reply Top of thread Forum

Posted by: lbmakem ^®

04/09/2006, 09:32:49

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if you can lay your hands on the 'Machinery's Handbook' it gives three possible straight pipe threads,
(1)NPSC threads for pipe couplings
(2)NPSM threads for Mechanical Joints
(3)NPSL threads for Locknuts
my handbook is the 20th edition and the info is on pages 1401-1403.
hope this is of some help

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Re: Straight pipe threads, need help -- popethom	Post Reply	Top of thread	Forum