Chosen Solution
This has strange, tri-shaped screw heads but not the same as the tri-shaped driver offered by iFixit. See attached representation.
How do unscrew these? Can I buy/make an appropriate driver?
This may be a security screw. Please post a photo or take a look at the screws on this page and see if it’s one pictured: http://www.mutualscrew.com/product/secur… Do a google search for “tri-wing and security screws” and use the images option to see if you can find it.
Hi @cowboydon I believe that it is called a Holt Head security screw. Here is a link, scroll down to Holt Head and see if it is the one. http://www.midstatesbolt.com/technical-h…
We have a couple of bits that would most likely fit it in the 64-bit driver kit. Does it look more like a tri-point or a triangle? We have 4 different sizes of tri-point and 2 sizes of triangle.