What is a Bolt?

A Bolt is a form of a threaded fastener with an external male thread requiring a matching pre-formed female thread such as a nut. It is a type of fastener made from metal comprising of a head at one end, a chamfer at the other end, and a shaft characterized by an external helical ridge known as a thread. They are typically used to hold materials or objects together, or to position objects. 

Bolts are a form of mechanical fastener that is designed with external threads and paired with a nut which is intended to be inserted through holes and use to join parts together using tightening torque. Unlike screws, which are also externally threaded fasteners, bolts require a nut to be able to function properly and require a drilled hole into which the bolt may be inserted.

Types of Bolts

There are many different varieties of the bolt which can be selected based on the particular requirement or the materials involved. Most of the common types are listed below:

Anchor Bolt: These bolts are usually embedded in concrete or masonry for structural applications. The Anchor bolt can be preset while the concrete structure is being cast or may be attached after the concrete has been cured by the use of a drilling operation. 

Carriage Bolt: It is a form of a self-locking bolt with a flush-mount domed head. They are usually used to fasten metal to timber. Since it has a squared undercut to the head, this helps to hold the bolt in place once it has been tightened without a need to restrain the head with a wrench.

Blind Bolts: It is generally used as a fastener where the application does not allow access to both sides of the bolt to tighten or torque the bolt. 

Elevator Bolt: It has a flat, plain, or countersunk head that helps to hold the bolt in place when tightened. These are commonly used in conveyor systems.

Shoulder Bolt: They are also called Stripper Bolt. They are useful for functioning as a shaft or axle that can contain a rotating part, such as a bearing or a bushing.

Flange Bolt:  It is also known as the Frame Bolt. They distribute the bearing load using a washer on the undercut of the head. 

Hanger Bolt: It comprises two threaded ends instead of 1 head bolt. 

Hexagon Bolt: It is also known as Tap Bolt and Hex Bolt. They are the most common type of 1 head bolt, available in standard dimensional inch and metric sizes. They may be fully threaded or may feature an unthreaded shoulder. It comprises a head that has six sides with threading that begins part-way down the shank. In tap bolt, the shank is threaded the whole length.

Huck Bolt: In this, the pin and collar are swaged together using a specialist tool. It is usually used for a permanent fixing.

Lag Bolt: It is also known as Lag Screws. It is a heavy-duty fastener that creates its mating thread in timber and other soft materials when tightened. 

Machine Bolt: It has a short shank. Mostly used for assembling metal components through predrilled holes. They are similar to hex bolts, except that they do not have a chamfered point and are not designed with a washer-bearing surface on the underside of the head. They are typically available in both hex head and square head options.

Plow Bolt: It is commonly used in construction tools and other devices due to its durability and flat countersunk head with a square shank neck.

Round Head Bolt: They do not have the square taper beneath the domed head of the bolt and are typically used to join wood. 

Sex Bolt: the shank of the bolt is covered with a mating female component. They are used for fastening components that cannot be exposed to abrasive threads.

Square Head Bolt:  It is similar to a machine bolt, the only difference being it has short shanks along with a four-sided bolt head. 

Stud Bolt: They are also called Double End Bolts. It has a threaded portion on each end of the bolt, unlike the traditional 1 head bolt. It has hexagon nuts on both ends. The components are to be fastened between the two bolts.

Eye Bolt: It has a fully or partially closed-looped end, unlike the traditional 1 head bolt. In some cases, the loop in the bolt can be used to lift the object. Commonly the eye bolt is used to route wire, cables, or other similar elements cleanly to avoid accidental interference. Eye bolts can offer additional capabilities depending on the material composition and finish – some are suitable for low-temperature operations while others are designed to not reflect light and therefore will blend into the background.

Timber Bolt: They are usually used in the fastening of large timber components. 

T-head Bolt: Also known as T-slot Bolts. It has a T-shaped head that can be gripped by a wench and can fit into a slot with ease. T-bolts are used in applications such as securing fuel tanks in a place where having access to both sides of the fastener may not be possible in all cases. 

Toggle Bolt: It has an expanding wing-like nut that helps it to mount objects to walls.

Socket Head Bolt:  They are also known as Socket Head Screws. It has a recessed head to tighten using an Allen wrench or hex socket tool. The head style of these bolts varies from a cylindrical profile to a flat-head countersunk style to a domed button head design. The deeper recessed Allen socket head affords the ability to increase the torque applied to these fasteners while minimizing the risk of stripping or damaging the head.

U Bolt: They are bent in a “U” Shape and partially threaded on both ends. They are used in a range of applications from supporting pipe to automotive use on drive shafts and exhaust systems. Some designs include rubber coating to preclude wear from the movement of metal against metal. Other designs of U-bolt add thick rubber gaskets to reduce the effect of vibration and to control noise. Non-metallic designs are also available for use in applications where there is a risk of the U-bolt making contact with an electrically powered conductor.

Penta-Head Bolt: They are tamper-resistant bolts. Mostly applicable to reduce the likelihood of a person armed with standard tools can loosen or remove the belt. With the head of the bolt in the shape of a pentagon, standard wrench or socket sets will be incapable of being used on these bolts.

Nicrmo is one of the leading nut bolt manufacturers having most of the varieties of the bolt. The experts at Nicrmo help to choose the right bolt for your needs.

Credit Name :- https://www.tumblr.com/