On Thu, 06 Aug 2009 11:15:50 -0500, Tim Wescott wrote:
On Wed, 05 Aug 2009 22:24:52 -0400, Ned Simmons wrote:
On Wed, 05 Aug 2009 20:53:04 -0500, Tim Wescott

They may be 55 degrees, but they sure as heck aren't 1/8" OD -- the
shaft measured too close to 3mm to be anything else, and the OD of the
threads was definitely 3mm, too.

The limits on the major diameter of a 5-40 UNC-2A thread are .1242/.1191
-- within .001 of 3mm.

Hmm. Clearance hole for 5-40 is 1/8, this is definitely smaller than
that.

There's a lot of difference between a clearance hole and a tap
drill.

Hope This Helps!
Rich