What is bolt and its types?

Asked By: Honorata Chikhaoui | Last Updated: 28th May, 2020
Category: hobbies and interests woodworking
4.7/5 (91 Views . 29 Votes)
A bolt is a type of fastener, usually made from metal, that commonly comprises a head at one end, a chamfer at the other, and a shaft characterised by an external helical ridge known as a 'thread'. Bolts are typically used to hold materials or objects together, or to position objects.

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In respect to this, what is fasteners and its types?

Common types of Fasteners Nuts and bolts which allows the parts to be quickly detached without impacting the fastener. Cotter Pins, where the parts can be de assembled, but some damage would be done to the fastener. Long-lasting type where the parts can never be de-attached e.g. rivets and welding of fasteners.

Secondly, what is the use of bolt? Bolts are often used to make a bolted joint. This is a combination of the nut applying an axial clamping force and also the shank of the bolt acting as a dowel, pinning the joint against sideways shear forces.

Also to know, what are the different types of bolts and nuts?

There are many types of bolts and hardware nuts. Most, if not all, bolt types have machine threads. A threaded bolt screws into nuts to hold or fasten materials together. Bolt types include eye bolts, wheel bolts and machine bolts while types of nuts include cap nuts, expansion nuts and u-nuts.

What are examples of fasteners?

Examples of fasteners include: nuts and bolts, screws, pins and rivets; examples of integral joints include: seams, crimps, snap-fits and shrink-fits.

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What are fasteners used for?

A fastener (US English) or fastening (UK English) 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.

Where are fasteners used?

Fasteners can be used in various industries such as Automobile, Petrochemical, pharmaceutical, Oil and gas, Rubber, Food processing, heavy machinery and so on. Fasteners such as Bolts and Nuts come in various grades such as 4.6, 5.6, 8.8, 10.9 and 12.9.

What are key fasteners?

noun A tapered or wedge-shaped piece of metal which holds the breech-block or breech-plug of a gun firmly closed when it is inserted in the seat: a modification of the grip-fastener.

What are fastening tools?

Fastener tools are often the first to be selected for the handyman's toolbox. They are simply tools that help you apply fasteners, such as nails, bolts, and adhesives. Fastener tools include hammers, screwdrivers, pliers, and clamps.

What is another word for fastener?


Synonyms for fastener
  • latch.
  • screw.
  • bolt.
  • buckle.
  • button.
  • catch.
  • clasp.
  • fastening.

How are fasteners made?

Cold forging - Molding the steel into the right shape at room temperature. Bolt head - Progressively formed by forcing the steel into various dies at high pressure. Threading - Threads are formed by rolling or cutting. Heat treatment - The bolt is exposed to extreme heat to harden steel.

Which type of bolts is mostly used?

The principal types of bolts commonly used include:
  • Anchor Bolts.
  • Blind Bolts.
  • Carriage Bolts.
  • Double End Bolts.
  • Eye Bolts.
  • Hex Bolts.
  • Machine Bolts.
  • Penta-Head Bolts.

What is a true nut?

Well, let's start with the definition of a nut.
A true nut, botanically speaking, is a hard-shelled pod that contains both the fruit and seed of the plant, where the fruit does not open to release the seed to the world. Some examples of botanical nuts are chestnuts, hazelnuts, and acorns.

What are nuts and bolts used for?


When used together, nuts and bolts work to fasten a stack of parts together securely. When secured together, the nut and the bolt are able to stay together without dropping apart due to the friction that is generated by their thread, compression of the parts as well as a slight stretch of the bolt.

Who invented the bolt?

Archytas of Tarentum

What is difference between screw and bolt?

Screws are generally turned into an object, like a piece of wood, so the head needs to be bigger than the surface. The shafts of bolts are not tapered, whereas many screws are tapered. The main difference between a bolt and a screw is that a typical screw can work on its own and a bolt requires a nut to secure it.

How do bolts work?

Bolt Threads
Threads are one of a bolt's main characteristics. Turning the bolt causes the threads to move the complementary slot or nut upward against the inclined plane. The greater the torque, or turning force, the greater the pressure pulling the nut forward along the threads.

What are the different types of bolt heads?

Bolt Head Types and Practical Uses
  • Hex bolt: a bolt with a hexagonal head and machine threads for use with a nut or in a tapped hole.
  • Carriage bolt: a bolt with a smooth, rounded head that has a small, square section underneath.
  • Lag bolt: a bolt with a wood thread and a pointed tip.

What are bolts without heads called?


Socket Set or Grub Screws - are screws without a head that have an internal drive style. They are typically driven by an Allen wrench. These screws are designed to sit flush against the surface of the installation material.

What is mechanical bolt?

A bolt is a type of fastener which is used to join two parts together. The bolts join the part non- permanently i.e. the parts may be separated from each other by using an appropriate tool. Nuts are also used on the bolts so as to make the fastening process more effective.

How do you fasten a bolt?

Place the nut on the end of the threaded shaft. Be sure the washer is aligned properly with the threads on the bolt and then begin to twist it clockwise until it reaches the washer. Tighten the nut with your fingers to secure it. Complete the fastening process by using a wrench that fits the size of the nut.