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FITTER - CITS

LESSON 17:Introduction Of Locking Device MODULE 7

LESSON 18: Introduction To Rivet And Riveting

Objectives

At the end of this lesson you shall be able to
• define the rivet and its types
• state the uses of different types of rivets
• state the stepwise guide to the riveting process

Introduction to Rivet and its uses

Definition:

A rivet is a popular mechanical fastener to join two or more materials. A rivet consists of a head at one end and
a cylindrical body at the other and called its shaft. The tapered end of the shaft is called the rivets tail. The tail
looks like a metal pin. Rivets are used to join large structural pieces and small electronic assembles. The shafts
are hollow with another internal piece called a mandrel. The mandrel allows the riveter to deformed the tail of the
rivet without sticking it directly.
• Different types of rivet
1 Solid rivet: Solid rivets are one of the oldest and simplest types of rivets. They consist of a solid shaft with a
head on one end and a tail on the other. Solid rivets are installed by inserting the shaft through pre-drilled holes
in the materials to be joined and then deforming the tail to create a permanent connection.

2 Split rivet: It also known as Drive rivets or brazier head rivets, have a semi-tubular shaft with a head on one
end. They are installed by driving the shaft through the materials to be joined, causing the shaft to split and
flare out on the blind side of the joint.

3 Blind rivet / pop rivet: Blind rivets, also known as pop rivets, are used when access to only one side of
the joint is available. They consist of a tubular rivet body with a mandrel or stem attached. When the rivet is
installed, the mandrel is pulled through the body, causing the body to expand and form a head on the blind side
of the joint.

4 Friction lock rivet: friction lock rivets, also known as friction-grip rivets or interference lock rivets, are a type
of blind rivet designed to provide a secure and vibration-resistant joint. These rivets consist of a tubular body
with a mandrel or stem inserted inside. The mandrel has a slightly larger diameter than the rivet body, creating
an interference fit when the mandrel is pulled through the body during installation.

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CITS : CG & M - Fitter - Lesson 17