I'm an electrical engineer and very particular about secure wiring and strain relief.  These guys are perfect for routing LAN, 1/4 microphone/instrument and coaxial cables.  I recommend drilling a small 1/2" depth pilot hole to prevent cracking and excessive screwing force (people have been commenting about stripped screws).  Just wrap a piece of electrical tap around your drill bit to ensure precise depth.  I would also recommend a nut driver over a Philips head, as it just works better.  100 of these guys for 7 bucks is a great deal!  You can always use more anyway, *wink*