Harry Hi and merry christmas to you and the family, The thread of 3/8 X 26 TPI is either British standard cycle formally CEI if 60 degree form or British standard brass thread if 55 degree thread form. yours John Burridge South Oxfordshire Great Britain > Message Received: Dec 25 2006, 11:45 PM > From: "Harry Wade" <hww@xxxxxxxx> > To: modeleng@xxxxxxxxxxxxx > Cc: > Subject: [modeleng] Mystery thread > > Gents, > I have been asked to test and cerify a boiler (LBSC Bantam Cock) and the > pump connection bushing is a 3/8-26 thread. This isn't a standard thread > for anyone . . . even Tracy Tools lists it as a special. What in the world > thread series does this come from? Is this one of those cycle threads I > always heard about? > I also hope everyone has had a very pleasant and safe holiday. > > > Regards, > Harry Wade > Nashville Tennessee > > MODEL ENGINEERING DISCUSSION LIST. > > To UNSUBSCRIBE from this list, send a blank email to, > modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject > line. > > MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.