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  2. 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.

  3. Henry F. Phillips - Wikipedia

    en.wikipedia.org/wiki/Henry_F._Phillips

    After failing to interest manufacturers, Thompson sold his self-centering design to Phillips in 1935. [4] Phillips formed the Phillips Screw Company in 1934. After refining the design (U.S. Patent #2,046,343, U.S. Patents #2,046,837 to 2,046,840) for the American Screw Company of Providence, Rhode Island, Phillips succeeded in bringing the design to industrial manufacturing and promoting its ...

  4. 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.

  5. List of drill and tap sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

    Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.

  6. Phillips screwdriver - Wikipedia

    en.wikipedia.org/?title=Phillips_screwdriver&...

    move to sidebar hide. From Wikipedia, the free encyclopedia

  7. Second-grade teacher called 911 over Wisconsin school shooting

    www.aol.com/second-grade-pupil-called-911...

    Police in the US state of Wisconsin said the emergency call they received over Monday's school shooting came from a second-grade teacher, not a student as they had previously stated.

  8. List of tool manufacturers - Wikipedia

    en.wikipedia.org/wiki/List_of_tool_manufacturers

    Pliers, screwdrivers, nut drivers, wire pulling and stripping tools, crimping tools, scissors, snips, shears, cable and bolt cutters, conduit benders, personal protective equipment, tool bags for the electrical trade

  9. Robertson screw - Wikipedia

    en.wikipedia.org/wiki/Robertson_screw

    Close-up of Robertson drivers. Robertson screws are commonplace in Canada, though they have been used in other countries [3]: 85–86 and are becoming much more common. . As patents expire and awareness of their advantages have spread, Robertson fasteners have become popular in woodworking and general constructi

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