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2. Torx - Wikipedia

   en.wikipedia.org/wiki/Torx

   A Torx T8 screw head on a hard disk drive. Torx (pronounced / tɔːrks /) is a trademark for a type of screw drive characterized by a 6-point star-shaped pattern, developed in 1967 [1] by Camcar Textron. [a] A popular generic name for the drive is star, as in star screwdriver or star bits. The official generic name, standardized by the ...

3. 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 [70 ...

4. Torque screwdriver - Wikipedia

   en.wikipedia.org/wiki/Torque_screwdriver

   Manual torque screwdriver with torx bit. A torque screwdriver is a screwdriver with components that ensure tightening to a specified torque, ensuring tightening which is sufficient, but not excessive. An insufficiently tightened screw connection may loosen in operation, and excessive tightening can damage parts; for example, if the nuts holding ...

5. Robertson screw - Wikipedia

   en.wikipedia.org/wiki/Robertson_screw

   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. The contemporary square drive screw has all but replaced the Robertson screw proper and is commonly ...

6. Pentalobe screw - Wikipedia

   en.wikipedia.org/wiki/Pentalobe_screw

   Pentalobe screw. The pentalobe security screw[1] (Apple nomenclature), or pentalobe screw drive, is a five-pointed tamper-resistant system used by, but not limited to, Apple in their products. [1] Pentalobe screws were adopted by Apple starting in 2009, when they were first implemented in the 15-inch MacBook Pro.

7. Drill bit shank - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_shank

   Drill bit shank. The shank is the end of a drill bit grasped by the chuck of a drill. The cutting edges of the drill bit contact the workpiece, and are connected via the shaft with the shank, which fits into the chuck. In many cases a general-purpose arrangement is used, such as a bit with cylindrical shaft and shank in a three-jaw chuck which ...