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  2. Allen (brand) - Wikipedia

    en.wikipedia.org/wiki/Allen_(brand)

    Originally named Allen Manufacturing Company, the business produced hexagonal set screws and wrenches to fasten them. The terms "Allen wrench" (American English, though "Allen key" is also common in the US) and "Allen key" (British English) [3] are derived from the Allen brand name and refer to the generic product category "hex keys".

  3. Hex key - Wikipedia

    en.wikipedia.org/wiki/Hex_key

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

  4. Tap and die - Wikipedia

    en.wikipedia.org/wiki/Tap_and_die

    A tap and "T" wrench Various tap handles (wrenches). A tap cuts or forms a thread on the inside surface of a hole, creating a female surface that functions like a nut. The three taps in the image illustrate the basic types commonly used by most machinists: Bottoming tap

  5. List of screw drives - Wikipedia

    en.wikipedia.org/wiki/List_of_screw_drives

    The hex drive is better than square drive for locations where surrounding obstacles limit wrenching access, because smaller wrench-swing arcs can still successfully rotate the fastener. Metric sizes of the hex are specified by ISO 4032 and ISO 4033, plus ISO 4035 for Jam Nuts, and ISO 4014 and ISO 4017 for hex cap screws, ISO 4018 for Hex head ...

  6. Tap wrench - Wikipedia

    en.wikipedia.org/wiki/Tap_wrench

    The clamp is opened to insert the tool and then tightened down against the tool to secure it. This type of tap wrench is used with larger taps and where there is room to turn a larger wrench. [1] A T-handle is more compact. This type of wrench uses a collet to secure the tool. The collet design has two pieces: a threaded "nosecap" and four ...

  7. Easco Hand Tools - Wikipedia

    en.wikipedia.org/wiki/Easco_Hand_Tools

    Easco Hand Tools was an American manufacturer of hand tools. It is best known for being the main supplier of mechanic's tools for the Craftsman brand. Its tools were also sold under the Allen and KD Tools brands after its acquisition by Danaher Corporation.