I’ll guess the product in the screw head is Torque-Seal. Either F-925 or Sentry Seal. Also a good chance Apple requested a custom color or possibly included a UV indicator for faster inspections. Just a shot in the dark, but the next step for tamper proofing technology cases might be torque to yield screws; aka…

I vote this stuff is called torque-seal. Used as an anti-tampering or tampering indicator. It comes in all colors and it is pretty much the same as “Loctite”. Chris, I’m not hating on you; but don’t tell me that you actually reassembly laptops with a manual and a torque angle indicator. Field experience is priceless.…