I am looking for an elliptical cam locking device. This "lock" will be permanently affixed to an interior steel panel and the elliptical locking part will pass through an outside panel that will have a hole that matches the lock profile. When you rotate the lock mechanism the cam action will draw the panels together tightly and the elliptical aspect will keep the "lock" from slipping back through the hole. This will need to be able to hold a ton or more static load but I can gang them together to accomplish this. Before I make one I was hoping I could buy something similar. Any help greatly appreciated.