On Sat, 06 Sep 2014 22:38:35 -0500, Martin Eastburn
wrote:

On 9/6/2014 4:40 PM, Ed Huntress wrote:
On Sat, 6 Sep 2014 14:32:38 -0700 (PDT), "
wrote:

On Saturday, September 6, 2014 8:56:57 PM UTC, Mike Spencer wrote:



Well, bought from a dedicated industrial hardware distributor, not from

the local hardware store or Walmart.





Mike Spencer Nova Scotia, Canada

I looked at MIL-HDBK-57F and did not find anything with YD. You might try it using the computer to look for YD. I just looked at manufacturers whose nome started with Y.

Dan

The term "CUST: YD" appears all over the place in MIL Specs. I have no
idea what it means, or if it's related to this. But I'll bet it does.
It appears in relation to MIL Spec screws, as well as many other
things.

is it "Yet Defined" or "Yet Determined" or "Year Date" Hard to figure.

That reminds me of the special drawing...

(Damnit, can't find one online or on my hard drive.
Anyway, every one of the measurements was "TBD".)

--
Let no man imagine that he has no influence. Whoever he may be, and
wherever he may be placed, the man who thinks becomes a light and a power.
-- Henry George