What is Bolt and its Types?

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.

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Parts of a Bolt

A bolt comprises of two parts and these are

1. Head:

The upper portion of the bolt is called head. The head may have different shapes. The shape of the head depends upon the purpose for which the bolt is required.

2. Shank:

The cylindrical portion of the bolt is called shank. The tail end of the bolt is threaded to a sufficient length so that a nut can be engaged on it. And also the end of the shank is chamfered for inserting in a hole and a nut on it easily.

Specification of a Bolt

In order to completely specify a bolt, it is necessary to mention these eight features:

Shape or form of the thread
Pitch on the bolt

The shape of the head
Outline of the body, barrel, and stem
Size or diameter

The direction of the thread ( as right-handed or left-handed)
Length and
Material as steel, brass, etc.

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Dimensions of a Bolt

bolt dimensions

Materials of Bolt

The materials through which the bolt is manufactured are aluminum, brass, copper alloy, plastic, steel, harden steel, stainless steel, and titanium. The selection of materials for the making of the bolt depends upon where it is going to be used.

Types of Bolts

Anchor bolt
Carriage bolt

Elevator bolt
Flange bolt
Hanger bolt

Hexagon bolt/Tap bolt
Lag bolt
Machine bolt

Plow bolt
Sex bolt
Shoulder bolt

Square head bolt
Stud bolt
Timber bolt

T-head bolt
Toggle bolt
U-bolt

J-bolt
Eye bolts

In this article, we have learned about what is bolt, its main parts, types?. If you find this article useful and informative then don’t forget to like and share it.