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2. Toggle bolt - Wikipedia

   en.wikipedia.org/wiki/Toggle_bolt

   A toggle bolt, also known as a butterfly anchor, is a fastener for hanging objects on hollow walls such as drywall. Toggle bolts have wings that open inside a hollow wall, bracing against it to hold the fastener securely.

3. Wingnut (hardware) - Wikipedia

   en.wikipedia.org/wiki/Wingnut_(hardware)

   A wingnut, wing nut or butterfly nut is a type of nut with two large metal "wings", one on each side, so it can be easily tightened and loosened by hand without tools. A similar fastener with a male thread is known as a wing screw [ 1 ] [ 2 ] or a wing bolt .

4. Clutch (pin fastener) - Wikipedia

   en.wikipedia.org/wiki/Clutch_(pin_fastener)

   Butterfly clutches A butterfly clutch is a device that attaches to the back of a tack pin to secure an accessory to clothing. They are less secure compared to other types of pins such as prongs and safety pins , especially when the surface of the medium to which they go through is thick (e.g. wool ) or when the accessory to which clutches are ...

5. Molly (fastener) - Wikipedia

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

   Figure 1 of the original patent for the molly bolt, U.S. Patent No. 2,018,251. The molly bolt was patented in 1934 by George Frederick Croessant. [3] Although his patent acknowledges that expandable fasteners of this general kind were already known, Croessant's patent is intended to provide "an improved and adequate anchoring grip that may be retightened if necessary and that will permit ...

6. Nut (hardware) - Wikipedia

   en.wikipedia.org/wiki/Nut_(hardware)

   Fasteners used in automotive, engineering, and industrial applications usually need to be tightened to a specific torque setting, using a torque wrench. Nuts are graded with strength ratings compatible with their respective bolts; for example, an ISO property class 10 nut will be able to support the bolt proof strength load of an ISO property ...

7. Wall plug - Wikipedia

   en.wikipedia.org/wiki/Wall_plug

   Wall plugs. A wall plug (UK English) also known as an anchor (US) or "Rawlplug" (UK), is a fibre or plastic (originally wood) insert used to enable the attachment of a screw in a material that is porous or brittle, or that would otherwise not support the weight of the object attached with the screw.