Screw Button Head Hex M4 x 22mm Machine Steel Black (10pcs)
These are quality screws made from black oxide treated hardened steel, with precision threads and deep, square edged hexes for your drivers. Suited for all the most common hobby needs and quite a few uncommon ones as well.
Specs:
Type: Button Head
Head: Hex
Thread: Machine
Diameter: M4
Length: 22mm