Dwight wrote....
Look at the one in the online McMaster-Carr catalog
on page 3054. I think these are the right ones.
http://www.mcmaster.com
Awesome, I checked their catalog and they got 'em, exactly what I need.
Their part number for the HP one is 93040A108 (had to get out the caliper).
I'd recommend others check out this places' online catalog. As I was
skimming through it, they seem to have a TON of various connectors,
fasteners, etc. that I always thought would be impossible to find. They seem
to have it all.
And for the record, these are called "Plunger-Head Captive Fastners" :)
Thanks Dwight!!
Jay West