Looking through the family inheritance for a 17/64 x 18 TPI and found a 1/2 inch x 36 TPI it's bound to be something to do with a push bike.
Steve
What's a 1/2 x 36TPI tap for?
Apr 03, 2007
13 Replies
Making 1/2 x 36TPI Nuts?
Ill get my coat
Dave
Looks too fine for that, and I couldn't find anything quickly in the thread tables either.
Might be an instrument thread? Peter
-- Peter A Forbes Prepair Ltd, Luton, UK snipped-for-privacy@easynet.co.uk
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Doesn't appear so:
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BugBear
and
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BugBear
On or around Wed, 04 Apr 2007 08:08:00 +0100, Prepair Ltd enlightened us thusly:
cycle threads are mostly 26 pitch.
What's 1/2" on a pushbike ? I can only think of the wheel spindles, and those would probably be 26tpi - and thats fine enough. Are you sure its 36tpi, and not 26?
Other Steve
guns!
I googled for "1/2 x 36" tpi
and got a load of silencers...
BugBear
Interesting stuff - this tap is probably pre WWII if not WWI and was from a workshop specialising in bike production, nothing to do with guns at all.
Steve
It wasn't for a BSA bike was it?
(British Small Arms made guns and push-bikes)
I thought that that was Birmingham Small Arms
AWEM
dunno, maybe.
Yep
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My guess is a instrument of some kind, possibly optical, as here:
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-- Myford Mat
----------------------------------------------------------------------- Myford Matt's Profile:
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