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Other varieties of wall plug are mechanical anchors for heavy duty loads and hollow wall fixings for fixing to plasterboard. The first mechanical anchor, the Rawlbolt, was designed in the 1930s by the Rawlplug company and the first fixing for hollow walls was the Toggle Bolt, which was also designed by Rawlplug in 1941.
Molly fastener. A molly or molly bolt (often misspelled moly [1]) is a type of screw fastener that fastens objects to plaster or gypsum board hollow walls by providing an anchor to be lodged inside a hole and expanded once in position.
The force-transfer mechanism is based on friction mechanical interlock guaranteed by expansion forces. They can be further divided into two categories: [3] torque controlled: the anchor is inserted into the hole and secured by applying a specified torque to the bolt head or nut with a torque wrench.
Typical Fischer-Plugs Fischer invented wall plugs to hold screws (not all of Fischer Brand) Artur Fischer (31 December 1919 – 27 January 2016) was a German inventor. He is best known for inventing an expanding plastic version of the wall plug. [2] Born in Tumlingen, Artur Fischer was the son of the village tailor Georg Fischer.
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. [1] The wings, once fully opened, greatly expand the surface area making contact with the back of the hollow wall.
Expandable wall anchors with toggle arms. A drywall anchor, also known as a wall anchor, is an insert that, combined with the appropriate screw, can create a strong mount anywhere on a drywall panel or similar hollow wall. [1] A drywall anchor goes between the screw and the drywall, gripping the drywall much more effectively than a screw would. [2]