SparkFun PRT-10453 Screw – Phillips Head (1/4″, 4-40, 10 pack)
There are your standard Philips-head 4-40 screws. They are ΒΌ” long and come in packs of ten. This is the screw size we use in most of the holes for our breakout boards. Check below for other associated hardware.
Liamthe1st –
These are just what I needed for fixing my uno to a board along with a cobbler and Pi they are now in line for pinning up gpio etc