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R W
10-15-2008, 03:08 AM
Anyone know what the following abreviations stand for regarding pipe threads; UNO and BSPP.
Thank You. R W

derekm
10-15-2008, 03:14 AM
Anyone know what the following abreviations stand for regarding pipe threads; UNO and BSPP.
Thank You. R W
Unified National O-ring
British Standard Pipe Parallel

Derek

juergenwt
10-15-2008, 06:13 PM
Go here for BSPF/BSPP:
http://mdmetric.com/tech/tict.htm

Scroll down to: Chart lll, Thread Identification Chart: Section "A"
On the right side you will find BSPF/BSPP
As for UNO - never heard of it. Sure it is not UNC?

SDL
10-15-2008, 06:26 PM
Go here for BSPF/BSPP:
http://mdmetric.com/tech/tict.htm
As for UNO - never heard of it. Sure it is not UNC?

Go to here

http://www.hydraulicsupermarket.com/upload/db_documents_doc_14.pdf

and scroll down to Page 3 for Unified national O ring

Steve Larner

juergenwt
10-15-2008, 07:20 PM
Good job. Take a look at this:http://www.pirate4x4.com/tech/billavista/PR-Hydro_Steering/Dash%20sizing.pdf

It looks to me like a standard UNF or UN thread is used for a 37 deg. flare.
Not sure where to O-ring part comes in.
I guess I learned something new. Thanks.