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2. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   An external Torx screw has a projecting head in the shape of a Torx screwdriver bit (instead of a standard recessed cavity); a Torx socket is used to drive it. The external "E" Torx nominal sizing does not correspond to the "T" size (for example, an E40 socket is too large to fit a T40, while an E8 Torx socket will fit a T40 Torx bit [68 ...

3. Torque screwdriver - Wikipedia

   en.wikipedia.org/wiki/Torque_screwdriver

   Most torque screwdrivers allow the torque to be set to any value within a range. All have a torque-limiting clutch that disengages once the preset torque has been reached. Torque screwdrivers can exert torques from 0.04 N⋅m to at least 27 N⋅m. [1] Although no single tool covers the entire range, low-, mid-, and high-torque ranges are available.

4. Torx - Wikipedia

   en.wikipedia.org/wiki/Torx

   An External Torx version exists, also known as Inverted Torx, where the screw head has the shape of a Torx screwdriver bit, and a Torx socket is used to drive it. The external "E" Torx nominal sizing does not correlate to the "T" size, (e.g. an E40 socket is too large to fit a T40 Torx bit, while an E8 Torx socket will fit a T40 Torx bit [ 6 ] ).

5. Hex key - Wikipedia

   en.wikipedia.org/wiki/Hex_key

   The idea of a hex socket screw drive was probably conceived as early as the 1860s to the 1890s, but such screws were probably not manufactured until around 1910. Rybczynski (2000) describes a flurry of patents for alternative drive types in the 1860s to the 1890s in the U.S., [2] which are confirmed to include internal-wrenching square and triangle types (that is, square and triangular sockets ...

6. Easco Hand Tools - Wikipedia

   en.wikipedia.org/wiki/Easco_Hand_Tools

   The hand tools division of the company was taken public, and the other divisions were sold to an investment group including Citicorp Venture Capital. [3] In 1990, the hand tool company was acquired by the brothers' Danaher Corporation. [4] This acquisition made the tools division the largest part of Danaher. [5]

7. Lexicon - Wikipedia

   en.wikipedia.org/wiki/Lexicon

   A compound word is a lexeme composed of several established lexemes, whose semantics is not the sum of that of their constituents. They can be interpreted through analogy, common sense and, most commonly, context. [3] Compound words can have simple or complex morphological structures. Usually, only the head requires inflection for agreement.