I just did a little work on this page, which may be useful:
At 05:24 AM 7/19/2010, email@example.com wrote:
>Date: Sun, 18 Jul 2010 17:04:11 -0700
>From: Jon Spangler <firstname.lastname@example.org>
>Subject: [CR] Info on bike taps for non-machinists?
>To: Dale Brown <email@example.com>
>Content-Type: text/plain; charset=us-ascii
>Dear Bob and all,
>Not being a machinist, and being easily confused by "hybrid" (Metric
>+ SAE specs) sizing on threadings like 10MM x 26 TPI, I am lost when
>Bob mentions a
>"full roll" tap. A brief Google search gave me some
>not-quite-applicable machinist references, plus listings for Spinal
>Tap (definitely OFF-topic)
>and other distractions.
>Are there any good basic (simple enough for a home bike mechanic to
>comprehend) references about taps and threadings (mostly Metric in my case)
>that would not go too far into the "weeds" of production machining, CNC, etc.?
>For example, is there an all-metric sizing equivalent of 10 MM x 26 TPI?
John S. Allen
jsallen *at* bikexprt.com