Need help to identify a PCB connector
You are likely looking for bullet or barrel connectors.  Try going to digikey in the terminals sub section : http://www.digikey.com/product-search/en/connectors-interconnects/terminals-barrel-bullet-connectors/1442843?k=bullet

Another source would be http://www.digikey.com/product-search/en/connectors-interconnects/rectangular-connectors-contacts/1442670?stock=1

These would be crimp on (can be soldered) to wire, providing you a single barrel like connection.  You will need to use the search functionality to sort out what you are looking for specifically.  I would use molex for the manufacturer as they make an assortment of female connections for power, such as what you would see on vintage RC car battery packs.   Just search google images for "rc battery pack connectors".