They would ALL come in useful one day though, I figure !
NICE FIND Jose !
A place I used to work.
David & I, used to keep all the 'weird' screws & fixings that came from RS-Components.
In a box of 100, you might find 1 without a slot.
You might find 1 with no thread.
You could even find 1 with no thread or slot.
Also eccentric & bent ones !
We collected them & when the RS-Rep. came round, to see if we were happy with their components...
...David & I would get our 'sample-box' out...
...& discuss the problems we'd been having VERY SERIOUSLY with the Rep. !