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  2. List of screw and bolt types - Wikipedia

    en.wikipedia.org/wiki/List_of_screw_and_bolt_types

    A rib neck carriage bolt has several longitudinal ribs instead of the square section, to grip into a metal part being fixed. confirmat screw: confirmat screw: Used in particleboard and medium-density fiberboard: elevator bolt: An elevator bolt is a similar to a carriage bolt, except the head (or foot, depending on the application) is thin and flat.

  3. Wittur - Wikipedia

    en.wikipedia.org/wiki/Wittur

    Wittur started its business with the production of elevator doors only and has developed itself over time to an enterprise offering complete elevators and producing a wide range of elevator components such as: [6] Elevator doors (car doors and landing doors) Lift machines; Safety devices (especially overspeed governors and safety gears) Cars ...

  4. Industrial Fasteners Institute - Wikipedia

    en.wikipedia.org/wiki/Industrial_Fasteners_Institute

    The Industrial Fasteners Institute (IFI) [1] is an American non-profit trade and standards organization and publisher, based in Independence, Ohio. It was founded as the American Institute of Bolt, Nut and Rivet Manufacturers in 1931 and changed its name to the IFI in 1949. [ 2 ]

  5. Bolt (fastener) - Wikipedia

    en.wikipedia.org/wiki/Bolt_(fastener)

    Elevator bolt - Bolt with a large flat head used in conveyor system setups. Hanger bolt - Bolt that has no head, machine threaded body followed by a wood threaded screw tip. Allow nuts to be attached to what is really a screw. Hex bolt - Bolt with a hexagonal head and threaded shank. Section immediately under head may be unthreaded for ...

  6. ABM Industries - Wikipedia

    en.wikipedia.org/wiki/ABM_Industries

    In the late 1960s, ABM acquired the companies later known as Ampco System Parking, CommAir Mechanical, Amtech Elevator Services and Amtech Lighting Services. [8] [13] In 1971, ABM made its debut on the New York Stock Exchange under the ticker symbol ABM. [10] ABM Engineering was established in the early 1990s and received ISO 9002 certification ...

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