Sounds like you need some size of Lock n lock type kitchen storage.
You have to shop smart to get good prices but they are durable and the lids are reliable.
Also come in a vast range of sizes so you can pick different size boxes for small and large screws.
Dust and damp proof...
I use kitchen boxes to keep all sorts of smaller tools organised and free from damp but not for screws.
Personally I have Stanley sortmaster junior boxes - what you don't want - but I have a separate case for each diameter of screw and bolt that I use lots of - #3 through #6 woodscrews, M4 through M12 nuts n bolts, more for exterior grade screws, wall plugs and frame fixings, etc. So the compartments only separate the screws by length. Maybe 18 cases and they sit nicely on a shelf.
You have to shop smart to get good prices but they are durable and the lids are reliable.
Also come in a vast range of sizes so you can pick different size boxes for small and large screws.
Dust and damp proof...
I use kitchen boxes to keep all sorts of smaller tools organised and free from damp but not for screws.
Personally I have Stanley sortmaster junior boxes - what you don't want - but I have a separate case for each diameter of screw and bolt that I use lots of - #3 through #6 woodscrews, M4 through M12 nuts n bolts, more for exterior grade screws, wall plugs and frame fixings, etc. So the compartments only separate the screws by length. Maybe 18 cases and they sit nicely on a shelf.