Toggle bolt

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various opened and closed toggle bolts Toggle bolts.JPG
various opened and closed toggle bolts

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. This ultimately spreads out the weight of the secured item, increasing the weight that can be secured compared to a regular bolt.

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Rivet Permanent mechanical fastener

A rivet is a permanent mechanical fastener. Before being installed, a rivet consists of a smooth cylindrical shaft with a head on one end. The end opposite to the head is called the tail. On installation, the rivet is placed in a punched or drilled hole, and the tail is upset, or bucked, so that it expands to about 1.5 times the original shaft diameter, holding the rivet in place. In other words, pounding creates a new "head" on the other end by smashing the "tail" material flatter, resulting in a rivet that is roughly a dumbbell shape. To distinguish between the two ends of the rivet, the original head is called the factory head and the deformed end is called the shop head or buck-tail.

Fastener A hardware device that mechanically joins or affixes two or more objects together and used to create non-permanent joints.

A fastener or fastening is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. Welding is an example of creating permanent joints. Steel fasteners are usually made of stainless steel, carbon steel, or alloy steel.

Bolted joint type of fastener

Bolted joints are one of the most common elements in construction and machine design. They consist of fasteners that capture and join other parts, and are secured with the mating of screw threads.

Clevis fastener U-shaped fastener used to hold up a pulley

A clevis fastener is a three-piece fastener system consisting of a clevis, clevis pin, and tang. The clevis is a U-shaped piece that has holes at the end of the prongs to accept the clevis pin. The clevis pin is similar to a bolt, but is either partially threaded or is unthreaded with a cross-hole for a split pin. The tang is a piece that fits in the space within the clevis and is held in place by the clevis pin. The combination of a simple clevis fitted with a pin is commonly called a shackle, although a clevis and pin is only one of the many forms a shackle may take.

Frog (fastening) fastening in the form of an ornamental knot

A frog fastener is an ornamental braiding, consisting of a button and a loop, for fastening the front of a garment. The purpose of frog fasteners is to provide a decorative closure for a garment; frog fasteners are usual to garments of Asian design, such as a shirt or coat with a mandarin collar, which features frog fasteners at the shoulder and down the front of the garment. In the design of a garment, frogging is the use of braided, frog fasteners is a detail of the overall design of the garment.

Safety wire wire to secure bolted joint

Safety wire or locking-wire is a type of positive locking device that prevents fasteners from falling out due to vibration and other forces. The presence of safety wiring may also serve to indicate that the fasteners have been properly tightened.

Latch Mechanical fastener

A latch or catch is a type of mechanical fastener that joins two objects or surfaces while allowing for their regular separation. A latch typically engages another piece of hardware on the other mounting surface. Depending upon the type and design of the latch, this engaged bit of hardware may be known as a keeper or strike.

The Fender Telecaster Thinline is a semi-hollow guitar made by the Fender company. It is a Telecaster with body cavities. Designed by German luthier Roger Rossmeisl in 1968, it was introduced in 1969 and updated in 1972 by replacing the standard Telecaster pickups with a pair of Fender Wide Range humbucking pickups, bullet truss-rod and 3-bolt neck.

Wall plug Wall plugs

A wall plug, also known as an anchor (US) or "Rawlplug" (UK), is a fibre or plastic insert used to enable the attachment of a screw in material that is porous or brittle or that would otherwise not support the weight of the object attached with the screw. It is a type of anchor that, for example, allows screws to be fitted into masonry walls.

Punch (tool) shaped steel or other metal tool with a blunt end that may be struck with a hammer

A punch is a hard metal rod with a narrow tip at one end and a broad flat "butt" at the other. When used, the narrower end is pointed against a target surface and the broad end is then struck with a hammer or mallet, causing the blunt force of the blow to be transmitted down the rod body and focused more sharply onto a small area. Typically, woodworkers use a ball-peen hammer to strike a punch.

Toggle may refer to:

Wingnut (hardware) type of fastener

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.

Molly (fastener) Patented fixing

A molly or molly bolt, often misspelled moly, is a formerly trademarked name for a specialized screw fastener that would reliably fasten objects to plaster or gypsum board hollow walls. Larger sizes permit reasonably heavy objects, such as shelving, flatscreen-TV mounts or central-heating radiators to be attached to drywall in locations where there is no stud behind the drywall. For heavy objects, multiple molly bolts may be required.

Screw type of fastener characterized by a thread wrapped around a cylinder

A screw and a bolt are similar types of fastener typically made of metal, and characterized by a helical ridge, known as a male thread. Screws and bolts are used to fasten materials by the engagement of the screw thread with a similar female thread in the matching part.

Bolt (fastener) cylindrical fastener with an external thread intended to be used together with a nut

A bolt is a form of threaded fastener with an external male thread. Bolts are very closely related to screws.

Mechanical Plastics Corp. is a company based in Norwalk, Connecticut that "produces screw anchors and toggle bolts used in the construction industry." These anchors, which range from light-duty to heavy-duty, are "used to fasten objects to walls, ceilings, and floors made of concrete, brick, cement block, drywall, and fiberglass". Mechanical Plastics Corp. currently contains two main divisions, TOGGLER and Wej-It. According to The New York Times, Mechanical Plastics currently distributes its products to twenty-four countries internationally, and these products are then sold at retail stores such as Lowe's. TOGGLER anchor system, whose patents are owned by Mechanical Plastics Corp., is used in the area of home improvement, when driving "a screw or nail directly into a framing member behind the wall surface" is not possible and it is necessary to choose a fastener that is "specifically designed for gripping in the hollow spaces between the studs and joists." The Popular Mechanics journal, states that "The basic Toggler is the screw anchor which can work in both solid-wall and hollow-wall applications. It consists of a polypropylene anchor and a small plastic setting key. All you do is drill a hole in your wall and slide the anchor in place. For solid walls, the anchor is just wedged into the hole, like a normal plastic anchor. If the wall is hollow, you simply slide the key setting pin into the anchor and push." As such, these Toggle bolts are used to "support items like mirrors, framed artwork, and towel racks." Mechanical Plastics Corp. also manufactures the Wej-It expansion bolt, which "is a one-piece all-steel anchor for attaching anything to concrete, brick, or stone."

A Palnut® Fastener is a variation of the lock nut device for bolts which are intended to fasten securely without welding or any other permanent fastening. The Palnut is a registered trademark of Tinnerman Palnut Engineered Products LLC. The device is screwed on the bolt on top of an underneath the nut, and has a series of protruding barbs that locks the nut in place when the nut is tightened then twisting the Palnut to lock the bolt in place. The Palnut itself is a reusable means of bolt stability. While there are some better means of permanent fastening methods. Palnut's are a good solution to low maintenance and fast means of securing two items together and ensuring that they stay together.

Drywall anchor

A drywall anchor, also known as a wall anchor, is an insert that, combined with the appropriate screw, can create a firm mount anywhere on a drywall panel or similar hollow wall. A drywall anchor goes between the screw and the drywall, gripping the drywall much more effectively than a screw would. Some have toggle arms, which either drop into place behind the wall or expand within the cavity. Others include wide threads that carve out grooves in the wall for traction. All drywall anchors are designed to create a firm mount point by distributing the applied load over an increased surface area.

Bolt snap A sprung slide gated snap hook

A bolt snap is a type of snap hook with a manually operated bolt action slide gate of medium security used to clip a light load to a ring, eye, loop or bight to temporarily secure or suspend an object. They are used for a wide variety of applications including dog leads and for clipping scuba equipment to the diving harness. A similar but more secure device used to attach sails to a stay is known as a piston hank. It differs from a snap shackle in that the load is not carried by the gate. The bolt snap must be actively operated by the user to clip or unclip, and is not easily snagged or unintentionally clipped or unclipped by pressing or bumping against the surroundings. The most common type has a single snap hook at one end and a swivel ring at the other, but double ended bolt snaps and single ended snaps with a swivel shackle are also available. There are a few variations on the style of the hook, gate opening and swivel style. The characteristic element of the bolt snap is the bolt action gate. This is a spring loaded rod which slides longitudinally inside the body of the clip against a compression spring to open the gate of the hook, and returns to rest against the tip of the hook by the action of the spring when released. Bolt snaps are not generally load rated, and are not used to suspend heavy loads. Most applications are in the load range where the user can lift the object to be clipped, or can hold the load manually.


  1. New Fix-it yourself manual, Reader's Digest, ISBN   0-89577-871-8