Help identifying these connectors

[nick1911]

Hello all;

Long time lurker but first time poster here.  I'm working on building out some circuit boards for some training equipment I'm doing for the local community college as a volunteer project.  I'm trying to identify a particular connector, as I'll be needing to use it to swap the training board into the existing equipment.  It's a round connector soldered to the board that accepts a rigid pin.  I've taken some photos of it, which can probably describe it better then I can in words.

I've been poking at digikey for a while, and I'm just not quite sure what this guy is called.  Any help would be greatly appreciated!

Thanks!

[amyk]

PCB mount female bullet connector.