Summary

I needed something that acted as a hinge I could glue to the back of my aquarium, and screw it into some Lexan to make a top for an aquarium.

I used a M5 bolt with 40mm threads as a pin, you can drill all but the last part with a 5mm or 13/64 bit, if you need to, and you can cut threads in the end side of the back piece to keep it from sliding out. You can always use a nut with a longer bolt as well, but that seems low class..

I used silicone to adhere the back, and 5mm plastic screws to attack it to the lid, but to each their own.