Paul,
You might take a set of calipers and measure the OD of the post, then
figure what that decimal equivalent is closest to (ie.. #10 or #12 machine
screw)using a fraction/decimal equivalency chart. One of these can usually
be found in any good tap and die set or drill bit set.
Another possibility would be to measure the post and measure the tap
that most closely resembles the size of the post and use the die that is
equivalent to that tap.
Hope all of this is clearer than mud.
I'd be pretty gentle with the thread cutting though. I believe that 50
year old pot metal is pretty brital.
Jeff Davis
'51 custom
>From: Hudson29@aol.com
>Reply-To: Hudson29@aol.com
>To: oletrucks@autox.team.net
>Subject: [oletrucks] AD Hood Side Trim Speculation/Question
>Date: Wed, 23 Jun 1999 12:38:12 EDT
>
> I got to thinking last night that most of the old ADs I have seen
>around SoCal are missing the hood side trim that proclaims to the world
>that
>this truck is a Chevy. As if anybody could anybody seriously confuse it
>with
>a Dodge of Ford!
> Some months ago I received a pair of repop Chevy medallions and I got
>them out last night for inspection. The fasteners, a couple of cast metal
>posts that stick out are intended to be used with a couple of slide-on one
>way clips making removal without destruction close to impossible.
> It would seem likely that at repaint time, the trim may have been
>popped off with a screwdriver breaking the posts off and rendering the
>original trim unusable. I'll bet most owners, given the choice off
>searching
>for the seemingly unavailable parts, said forget it and the truck soldiered
>on, sans trim.
> A question for those who have some basic machinist's savvy. I have
>been thinking of running a die over the posts to thread them for a nut so
>the
>trim pieces can be removed easily in future. How do I judge what size die
>to
>use? I think a number 12 might work, but it might be a 10. What say you?
>
>Paul O'Neil,
>1951 Chevrolet 3600 Pickup Project, See it at:
>The Poor Man's Advanced Design Tech Tips Page
>http://home.earthlink.net/~conntest47/
>Fullerton, California USA
>Hudson29@aol.com
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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