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2. Robertson screw - Wikipedia

   en.wikipedia.org/wiki/Robertson_screw

   Screwdriver bits in different sizes for Robertson screws. When Henry Ford tried the Robertson screws, he found that they saved considerable time in Model T production. When Robertson refused to license the design, Ford realized that the supply of screws would not be guaranteed, and chose to limit their use to his Canadian division. [4] [5] [6]

3. Screwdriver - Wikipedia

   en.wikipedia.org/wiki/Screwdriver

   A typical simple screwdriver has a handle and a shaft, ending in a tip the user puts into the screw head before turning the handle. This form of the screwdriver has been replaced in many workplaces and homes with a more modern and versatile tool, a power drill, as they are quicker, easier, and can also drill holes. The shaft is usually made of ...

4. Torx - Wikipedia

   en.wikipedia.org/wiki/Torx

   A security Torx L-key and fastener with holes for a safety pin to hinder disassembly with an ordinary Torx key. A Torx T8 screw head on a hard disk drive.. Torx (pronounced / t ɔːr k s /) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 [1] by Camcar Textron.

5. Sonic screwdriver - Wikipedia

   en.wikipedia.org/wiki/Sonic_screwdriver

   The sonic screwdriver is a fictional multifunctional tool [1] in the British science fiction television programme Doctor Who and its spin-offs, used by the Doctor.Like the TARDIS, it has become one of the icons of the programme, and spin-off media such as The Sarah Jane Adventures and Torchwood have replicated its functions in devices such as the sonic lipstick, sonic blaster, sonic probe ...