These are self-drilling 6 x 3/8" self-drilling Tek screws that are awesome for fastening aluminum pieces. We use these in the hardware fastener kits for all the ESawdust enclosure systems.
These will work with the following ESawdust enclosures:
Chameleon 1 (Basic and mini2440)
Crib for Arduino (Arduino Case)
Dog House for Beagle Board and Beagle Board xM case