At 04:59 PM 6/1/2010, Malcolm Stebbins wrote:
>Sorry.  I MAY not have the right name for this "pin", but in my
>vocabulary, a Westy arm-rest drift pin is a metal tube about the
>length of a hairpin (maybe shorter) and about the diameter of an
>elbow spaghetti..... BUT, it is completely cut from end to end so
>that it will compress when forced/banged into a tunnel type
>hole,  like the one on the westy arm rest.

Technically speaking it's called a spring pin; a roll pin is similar
except that it's actually rolled up of thinnish material instead of
being a not-quite-complete circle of thicker stuff.

A drift pin is a tapered assembly tool used to align two holes before
shoving the rivet (or bolt) through.

A drive pin is something else entirely -- an expanding fastener that
you activate by driving a small pin flush with the head.

Incidentally the spring pin on the Vanagon armrests is a full 8 mm
diameter.  See
http://picasaweb.google.com/lh/photo/E7QCRNkMRYvU9Dopc7V9BA?feat=directlink
for a picture of the pin and the pin punch I made for it.

Yours,
David