Take a look at http://www.unified-eng.com/scitech/bolt/boltmarks.html
See if that is what you want.
73 de Richard K0XG
----- Original Message -----
From: "Eric Rosenberg" <email@example.com>
Sent: Tuesday, June 11, 2002 12:06 AM
Subject: [Towertalk] Coding on Bolt Heads?
> I'm looking for information that will help me decode the letter codes
> printed on large (and small) bolt heads.
> I found a reference to a site here on Towertalk from 1997, but that
> site is long gone.
> Can anyone help?
> Thanks, in advnace,
> Eric W3DQ
> Washington, DC
> Towertalk mailing list