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  2. Yankee screwdriver - Wikipedia

    en.wikipedia.org/wiki/Yankee_screwdriver

    There were 3 different size spring chucks, and therefore 3 different shank size tips or sometimes called points, to fit various models. Generally all tips made by North Brothers or Stanley were stamped with the corresponding number of the model screwdriver they would fit, but the stamped numbers are often difficult to see, so it's a good idea to know the size you need before you set out to ...

  3. 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 ...

  4. Torque screwdriver - Wikipedia

    en.wikipedia.org/wiki/Torque_screwdriver

    Torque screwdriver. 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 the wheel of a car ...

  5. Torque wrench - Wikipedia

    en.wikipedia.org/wiki/Torque_wrench

    A click torque wrench. A torque wrench is a tool used to apply a specific torque to a fastener such as a nut, bolt, or lag screw.It is usually in the form of a socket wrench with an indicating scale, or an internal mechanism which will indicate (as by 'clicking', a specific movement of the tool handle in relation to the tool head) when a specified (adjustable) torque value has been reached ...

  6. Screwdriver - Wikipedia

    en.wikipedia.org/wiki/Screwdriver

    A screwdriver is classified by its tip, which is shaped to fit the driving surfaces (slots, grooves, recesses, etc.) on the corresponding screw head. Proper use requires that the screwdriver's tip engage the head of a screw of the same size and type designation as the screwdriver tip. Screwdriver tips are available in a wide variety of types ...

  7. List of screw drives - Wikipedia

    en.wikipedia.org/wiki/List_of_screw_drives

    List of screw drives. At a minimum, a screw drive is a set of shaped cavities and protrusions on the screw head that allows torque to be applied to it. [1][2] Usually, it also involves a mating tool, such as a screwdriver, that is used to turn it. Some of the less-common drives are classified as being "tamper-resistant".

  8. Torque tester - Wikipedia

    en.wikipedia.org/wiki/Torque_tester

    A torque tester is a quality control device to test or calibrate torque -controlled tools. This includes electronic torque wrenches, click torque wrenches, dial torque wrenches, electric screwdrivers, air screwdrivers, pulse tools, cordless screwdrivers, nutrunners, and torque screwdrivers. Advanced torque testers include the ability to measure ...

  9. Hex key - Wikipedia

    en.wikipedia.org/wiki/Hex_key

    A hex key (also, hex wrench, Allen key and Allen wrench or Inbus) is a simple driver for bolts or screws that have heads with internal hexagonal recesses (sockets). Hex keys are formed from a single piece of hard hexagonal steel rod, having blunt ends that fit snugly into similarly shaped screw sockets. The rods are bent to 90º, forming two ...

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