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Types of washers

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Bearing Centre
Types of washers

A washer is a circular piece of hardware that distributes a screw or nut's force evenly and can also be used to relieve friction, prevent corrosion or leaking, keep tension in place, and act as a spacer. Because of their extensive range of applications, they are required in almost all building projects. However, selecting the appropriately bonded washers for a project can be more complex than it appears; that's why in this article, let's discuss the common types of washers:


1.Lock Washers

Lock washers are used to keep nuts and bolts from coming loose. Because of vibration and torque, the lock washer prevents nuts and bolts from twisting, slipping, and coming free. The primary notion is to keep the nut and bolt in place. Different lock washers execute this purpose in slightly different ways. The ends of some lock washers bite into the base material (bolt) and the nut to perform this function.

  • Split Lock Washers:

Split lock washers, also known as helical washers, are non-continuous rings with each end curved slightly outward in different directions. Split lock washers flatten fastened, with each end digging into the mating surfaces. The purpose of this tool is to secure a fastener in place.

  • External Tooth Lock Washer:

Multiple teeth characterize an external tooth lock washer on the outer diameter that bites into a single surface and resists compression. Wide-headed fasteners are locked into place with this tool.

  • Internal Tooth Lock Washer:

An internal tooth lock washer contains many teeth that bite into the fastener on the interior diameter—used to secure shallow-headed fasteners in place while also absorbing shock and vibrations.


2.Spring Washers

Spring washers feature axial flexibility, which allows them to move with vibrations, preventing unfastening or loosening due to the vibrations. They improve a joint's elastic characteristics.

  • Crescent Spring Washer:

Crescent spring washers, also known as curved spring washers, resemble flat washers that have been slightly bent to exert light pressure while maintaining flexibility. The purpose of these washers is to absorb movement.

  • Finger Spring Washer:

 Three curved flanges characterize finger spring washers; vibrations and noise are reduced by using this washer.

  • Wave Spring Washer:

Wave spring washers are bent in two directions, giving them a wave-like appearance. Cushions or spacers are the most common applications.


3.Plain Washers

Plain washers, often known as flat washers, are the most common type of washer. They disperse pressure and safeguard the object to which the screw or nut is attached. We can utilise a plain washer to compensate for a too-large hole for the fastening.

  • Flat Washer:

The flat washer, also known as Type A plain washer, is what most people envision when thinking of a regular washer. They're spherical and flat, with different thicknesses and a bolt hole in the center.

  • C-Washer:

A C-washer is similar to a flat washer, but it has a slot carved out of the middle hole, forming a "C" shape. This tool comes in handy when a washer needs to be removed, modified, or replaced without removing the fastener.

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