Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Default Strange thread

On Wed, 15 Jul 2015 21:24:49 +0000, Volker Borchert wrote:

In the replacement steering knuckle for an IHC 453 there are two
threaded holes whose thread I can't make out: inner diameter about 10.25
mm and a pitch of 13 TPI [1].

WTF is this? It's obviously neither M12(x1,75) nor UNC1/2x13...
Is there an UNC15/32x13? Or even a cross-over 12mmx13TPI?

Any hints appreciated [2].

Volker

[1] I screwed in a 11mm square wood rod to get that accurately.
[2] Yes, I'll contact the vendor. But, I prefer not to appear totally
ignorant on the phone ;-)


13 TPI is more like a 2mm thread, if you're not sure of what dominion it
belongs to -- are you sure it isn't M12x2?

--

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com
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