I use general purpose 40mm gal flatheads for the boxes, glued with PVA. Painted on the outside only. Oldest box is about 4 years, still holding fast.
With the frames I use 35mm cement coated nails, from my bee supplier and PVA glue. The nails are a little long, and if nailed dead centre they tend to block the hole for the wire.
This 10 frames and I do them foundation installed in just under 5 minutes.
That is impressive, I timed myself building a single frame (nails, eyelets, wire, foundation) and the best I could do was about 8mins. Guess I need to work on a system!
Do you use wire in your frames?
I was going to try using 32mm brads, but I still have a stack of cement coated nails to use up.