Version Coin - 50 Pack - Computer Case Screws 6/32" (#6) Hex Head with Phillip's Screwdriver Head Screws for Computer Case, Hard Drive, Motherboard, or PCI Slot Mounting. Hex Head with Phillip's Head Screwdriver Slots 6/32 (#6) Screw Diameter Commonly used for fastening case sides. Can be used to mount motherboards, hard drives, power supplies, etc. that use #6 screw mounts.