gavinp Posted June 1, 2004 Share Posted June 1, 2004 fit into a 3/8 UNF socket? thanks Superlight R #41 Link to comment Share on other sites More sharing options...
Sheds Moderator Posted June 2, 2004 Share Posted June 2, 2004 I think it depends upon the fitting (is it for pneumatics?), but there is one co. on the net selling a fitting 1/8 BSP x 3/8 suggesting this may be correct. Er, why not try it, or mic it up? I have also learned that there are only 1/8 BSW and 1/4 BSW bolts in the whit range which are unique and can't be turned by a metric or imperial which happens to fit. I've also been leanring about "cycle" threads, common on Brit bikes and different again from whit, even in the sizes where it ought to match. Bizarre and fascinating. Thank God they are now unified (pun intended for engineers out there) in the metric system. Or are they? BMW use BSP pipe fittings... This of course is why I collect old spanners and am quite prepared to butcher the cheap ones for a special job, for that fateful day when I discover that the lower squibknocket retaining nut on a 1926 Lister Ditchmaster stationary engine is a 19/32 Unified West of England (Not Birmingham) left hand thread. (I've got just the size...) Link to comment Share on other sites More sharing options...
Mark Gregory Posted June 2, 2004 Share Posted June 2, 2004 Battered.... IIRC the 1926 Lister Ditchmaster did not use any 19/32" UWE threads, they were all 39/64" UWE. Just to keep the record straight. Mark Link to comment Share on other sites More sharing options...
Sheds Moderator Posted June 2, 2004 Share Posted June 2, 2004 😬 That's a relief Mark, I have a spanner to fit 39/64 UWE (not Birmingham). The 19/32nds must only have been post 1928 in that case. Just in case I ever need one, do you happen to carry a LH tap in that size? I'll be in touch if I need one, thanks. Link to comment Share on other sites More sharing options...
Mark Gregory Posted June 2, 2004 Share Posted June 2, 2004 Yes, I think it was July 15th when they changed over (something to do with the MDs wife's sister preferring the proportions of 19/32" UWE). Unfortunately I only have the RH second tap, now where did I put it for safe keeping? This is becoming surreal... Mark PS: Give my regards to Richard when you next see him. Link to comment Share on other sites More sharing options...
gavinp Posted June 2, 2004 Author Share Posted June 2, 2004 oh dear.... 😳 Superlight R #41 Link to comment Share on other sites More sharing options...
Sheds Moderator Posted June 3, 2004 Share Posted June 3, 2004 😬 Sorry Gavin, I hope you read the useful information before it descended into wibble. . The key is, does it fit? Alternatively do you need a special fitting, perhaps an 1/8" Fine Coventry & Derby pattern as fitted to certain models of the Philpott and Jones "Supremest" of the 20s? I'll see if I have one in the shed. Alternatively Mark seems to have a good selection of UWEs, you'll get away with a second tap if you use lots of cutting oil, make sure it's square at the start and back it off regularly. Link to comment Share on other sites More sharing options...
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