What are flat bolts called?

A stove bolt is a type of machine screw that has a round or flat head and is threaded to the head. They are usually made of low grade steel, have a slot or Phillips drive, and are used to join sheet metal parts using a hex or square nut.

What are flat head bolts called?

Flat Head Screws, also called Countersunk Screws, are conical with a flat outer face and a tapering inner face. An advantage to this type of screw is that very little of the head protrudes beyond the surface, allowing it to sink into the material.

What is a flat nut called?

Square Nuts. A four-sided nut that may be flat or beveled on top. Square nuts provide a greater surface contact area which provides more resistance to loosening.

What is a flat on a bolt?

Flat nuts are a simple nut that is stamped from sheet metal. … Flat nuts include two raised tangs with curved ends engage with the threads of an inserted fastener. This style of interface can work with either a machine screw or a self-tapping fastener, though they’re typically designed for machine screws.

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What is a smooth bolt called?

Carriage Bolt

A bolt with a smooth rounded head. The vast majority of carriage bolts have a square neck. This is a small square section under the head that prevents spinning during assembly. Carriage bolts are primarily used in wood.

What are the 3 types of screws?

3 Common Screw Types at a Glance – Machine, Sheet Metal, and Cap Screws.

What is a Panhead bolt?

Pan head screws are a common head type of non-countersunk screw head used in wood screws, self-tapping screws, self-drilling screws, and machine screws. They have wide heads, a flat bearing surface, high vertical, chamfered, or curved sides, and a flat or slightly domed top surface with a recessed socket.

What is a tinnerman nut?

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. … When the fastener is tightened, the base of the nut, which is arched, elastically deforms and applies a force to the fastener, which locks it from loosening under vibrations.

What is the name of the nut which is a cap nut with spherical dome at the top?

Acorn nut is its common name and it is also called a crown hex nut, blind nut, cap nut or domed cap nut. It is a nut that has a domed top to cover the threads.

What is a hex bolt?

Hex bolts, or hex cap screws, are large bolts with a six-sided head (hexagonal!) used to fasten wood to wood, or metal to wood. … Wood screws have many different types of heads, but the most common are round heads and flat heads.

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What are elevator bolts?

Elevator bolts are designed hold together canvas belts used in grain elevators and other conveyer systems. The large diameter of the head and square neck creates a greater bearing surface to keep the bolt from going through the soft conveyor material.

What is a flange bolt?

Used in automotive applications, plumbing, and more, flange bolts feature a washer like flange beneath the bolt head that speeds production time and distributes the clamping load, offering protection to the mating surface.

What are Chicago screws?

A sex bolt, (also known as a barrel nut, barrel bolt, binding barrel, Chicago screw, post and screw or connector bolt), is a type of fastener (nut) that has a barrel-shaped flange and protruding boss that is internally threaded. … It is normally chosen because of its low profile compared to other nuts.

What are hollow bolts called?

Alloy Steel Hollow-Lock Set Screws

Also known as jam set screws, these lock other screws in place, hold pins, and adjust spring tension.

What is a coach screw?

A Coach Screw is a heavy-duty screw which has a square or hexagonal head and an externally threaded cylindrical shaft that tapers to a point at the tip. They are primarily used for holding together heavy timber, fixing metal to timber and in some cases masonry or concrete.