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2. Robertson screw - Wikipedia

   en.wikipedia.org/wiki/Robertson_screw

   A Robertson screw, also known as a square screw [1] or Scrulox, [2] is a type of screw with a square-shaped socket in the screw head and a corresponding square protrusion on the tool. Both the tool and socket have a slight taper .

3. Bostitch - Wikipedia

   en.wikipedia.org/wiki/Bostitch

   Stanley Bostitch, previously and more commonly known as simply Bostitch, is an American company that specializes in the design and manufacture of fastening tools (such as staplers, staple guns, nailers, riveters, and glue guns) and fasteners (such as nails, screws, and staples).

4. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.

5. List of screw and bolt types - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_and_bolt_types

   These screws are most frequently used in applications where the screw is used to control fine motion of an object. machine screw: A machine screw is generally a smaller fastener (less than 1 ⁄ 4 inch (6.35 mm) in diameter) threaded the entire length of its shank that usually has a recessed drive type (slotted, Phillips, etc.). Machine screws ...

6. Allen (brand) - Wikipedia

   en.wikipedia.org/wiki/Allen_(brand)

   Originally named Allen Manufacturing Company, the business produced hexagonal set screws and wrenches to fasten them. The terms "Allen wrench" (American English, though "Allen key" is also common in the US) and "Allen key" (British English) [ 3 ] are derived from the Allen brand name and refer to the generic product category " hex keys ".

7. Screwdriver - Wikipedia

   en.wikipedia.org/wiki/Screwdriver

   Canadian P.L. Robertson, though he was not the first person to patent the idea of socket-head screws, was the first to successfully commercialize them, starting in 1908. Socket screws rapidly grew in popularity, and are still used for their resistance to wear and tear, compatibility with hex keys , and ability to stop a power tool when set.