Trojan Special Fasteners Ltd | Specialist Nuts Fasteners | Nuts Bolts Washers | Precision Polygon Turning | Fastener Manufacturer

Trojan Special Fasteners Ltd routinely manufactures plain flat washers to customer's requirements in multiple material and finish combinations.

A washer is usually a thin, flat disk-shaped component with a hole in the centre, which is used to distribute the load of a fastener, such as a bolt or screw. The washer is placed between the nut and the material being fastened, and it helps to prevent the fastener from becoming loose over time due to vibration or other factors.

Washers can be made from a variety of materials, including steel, stainless steel, brass, copper, nylon, and plastic. The choice of material will depend on the specific application and the properties required, such as corrosion resistance, strength, or flexibility.

There are many different types of washers available, each designed for specific applications. Some common types of washers include:

Flat washers: These are the most basic type of washer, and they have a simple flat shape with a hole in the centre.

Spring washers: These washers are designed to provide a spring-like action, which helps to maintain tension on the fastener over time.

Lock washers: These washers are used to prevent the fastener from becoming loose due to vibration. They are often used in conjunction with a nut or bolt.

Belleville washers: These are conical-shaped washers that provide a high load capacity and can be used to compensate for thermal expansion or contraction.

Wave washers: These washers have a wave-like shape and are used to provide a cushioning effect or to compensate for misalignment.

In a bolted assembly, the washer is typically placed between the nut and the material being fastened. The washer should be sized appropriately for the fastener and the application to ensure proper load distribution and fastener retention. The washer is usually held in place by friction, but some types of washers may have a locking feature or require special assembly techniques.

Washers are typically used to increase the bearing surface of a fastener. This provides increased surface area for a fastener and compensates for oddly sized or shaped holes. The addition of a washer to a nut and bolt assembly will resist loosening.

Washers are also used to distribute force so that mating surfaces are not damaged by nuts, especially square unchamfered nuts which have very sharp edges.

In addition to standard preferred sizes, we also manufacture non standard and non preferred sizes.