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2. Self-tapping screw - Wikipedia

   en.wikipedia.org/wiki/Self-tapping_screw

   A self-tapping screw is a screw that can tap its own hole as it is driven into the material. More narrowly, self-tapping is used only to describe a specific type of thread-cutting screw intended to produce a thread in relatively soft material or sheet materials, excluding wood screws .

3. Clip-on nut - Wikipedia

   en.wikipedia.org/wiki/Clip-on_nut

   An M6 spire clip or chimney U-nut for a bolt and a #8 u-nut for a self-tapping screw. A U-nut is very similar to a J-nut except that both legs are the same length. Because of this a retaining clip is usually formed on the leg without the threads. This helps keep the nut in place while not screwed down.

4. Threaded insert - Wikipedia

   en.wikipedia.org/wiki/Threaded_insert

   TIME-SERT insert. A threaded insert, also known as a threaded bushing, is a fastener element that is inserted into an object to add a threaded hole. [1] They may be used to repair a stripped threaded hole, provide a durable threaded hole in a soft material, place a thread on a material too thin to accept it, mold or cast threads into a work piece thereby eliminating a machining operation, or ...

5. Speed nut - Wikipedia

   en.wikipedia.org/wiki/Speed_nut

   U-nut on the left, speed nut on the right to be used with a self-tapping screw. A speed nut, aka sheet metal nut or Tinnerman nut, is a type of locknut with two sheet metal prongs that act as one thread. They are made from spring steel.

6. McMaster-Carr - Wikipedia

   en.wikipedia.org/wiki/McMaster-Carr

   McMaster-Carr Supply Company is a private American supplier of hardware, tools, raw materials, industrial materials, and maintenance equipment. They function as a business-to-business company. [ 2 ] The company was founded in 1901 and is based in Elmhurst , Illinois , with distribution centers in Robbinsville , New Jersey ; Santa Fe Springs ...

7. Screw mechanism - Wikipedia

   en.wikipedia.org/wiki/Screw_mechanism

   Because of its self-locking property (see below) the screw is widely used in threaded fasteners to hold objects or materials together: the wood screw, sheet metal screw, stud, and bolt and nut. The self-locking property is also key to the screw's use in a wide range of other applications, such as the corkscrew , screw top container lid ...