(you may need to check the word wrap, and/or paste it in)
I have used these screws, they are top quality plated steel ones and I would be very happy to use them again (in fact I got a trade pack, and I will probably be leaving quite a lot of them to my kids in my will!).
The cross-head screws come in two types, posidrive and Phillips. A Phillips screwdriver will work in a posi screw without damage, but using a posidrive screwdriver in a Phillips screw will damage one or both. Some Googling will give you more detail if you need it.
Never heard of Robinson, there is a Robertson, but never seen one actually used.
Slot, Phillips, Pozidrive, Hex, Hex socket, Torx, are the common ones but the list goes on and on, particularly when you start talking about 'tamper proof' varieties.
Sorry, my "fingers did the walking", but landed on the wrong keys. Robertson it is. Better than Phillips - much less likely to slip out. Patented by Robertson, actually. Here's more:.
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