JPQ

Hi all! I am trying to find a cam lock replacement for a snap on tool box I am refurbishing. Snap-On are offering me 50£ for one lock and I need 2! No way I am spending 100£ on 2 locks. The problem is that I can't find cam locks with an 8mm square drive at the back to drive the box locking mechanism. Anybody has an idea or know where I could find this square drive/nut? Thank you in advance!