Anderson makes custom sockets. I assumed that when you said Anderson, that there was an Anderson imprint on the plastic or on the bag. The pins look like the ones from their 30Amp pin connectors.
http://www.andersonpower.com/us/en/p...nd-socket.aspx
There are two links to the drawing, one for the pin, one for the socket. You can measure the pins you have and see if they match up.
Plan B could be to just solder them onto the cables. (Not to open the annual solder vs crimp discussion
).
I'm assuming they are some kind of surplus at a pretty low rate to make it worth the effort to adapt them. On the other hand FRC is about adapting little kid toy car motors to amazing throwing arms, so this fits in pretty well.