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Washers

 (18 product groups)

What is the purpose of Washers?

The job of a washer is to prevent fasteners and screws from coming loose. These handy solutions prevent leaks and even out any pressures applied.

Our range features a wide selection of washers in materials such as steelnylon and rubber. Due to the nature of their purpose, we offer various shapes, sizes and types to ensure our washers are up to the job of securing the nut in which they are applied to.

We've put together a whole host of information over on our Knowledge Centre to walk you through the different types of washers, with guides including:

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Flat Washers - Plastic

In stock In production

Flat Washers made from a variety of plastics. Also known as plain washers, these flat plastic washers are among the most commonly used. The plastic washer helps evenly distribute the load of a fastener, such as a nut, whilst helping to reduce heat and friction during the process of tightening.

Our wide range features a vast array of sizes, including large diameter plastic washers that are suitable for a number of metric threads. We also offer a choice of materials, including Nylon washers and other plastic washers made from Polycarbonate (PC), Polypropylene (PP) and Polyoxymethylene (POM). As well as high-quality, hard plastic washers like Polyether Ether Ketone (PEEK). All with a durable, smooth finish.

  • Insulates against moisture and electricity
  • Resistant to corrosion, abrasion and most chemicals
  • Provides full insulation, cushioning and spacing
  • Colours: Natural, Black and Brown.

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Flat Washers - Metal

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Flat Metal Washers, are a type of Plain Washer; they are commonly used in conjunction with screws, bolts or nuts. They offer spacing and load distribution, and are an important part of any fastener assembly. Flat washers are a popular type of washer that does not lock, but instead is applied to protect mating surfaces from damage.

Our range of metal flat washers comes in Mild and Stainless Steel, in both Flat and Countersunk variants. Matt and zinc plated finishes are available.

We have a wide range of Nuts to choose from, so why not browse our selection of Metal Standard Hex Nuts, Nyloc Nuts, Metal Lock & Flange Nuts or our Metal Wing Nuts to find the ideal partner to suit your application.

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Flat Washers - Rubber

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Rubber Washers for sale at Essentra Components. Designed for use with screws, bolts and nuts - flat washers rubber are an essential component in any fastener assembly. Also known as plain washers, they are the most commonly used washer type. Flat washers do not have a locking function, but instead are applied as protection for mating surfaces, from damage. Our rubber washers, which are often used by manufactures for spacing, buffing, sealing and for locking purposes, provide ideal support to threaded fasteners, particularly in the construction industry. These durable flat rubber washers have excellent anti-vibration and shock absorbing properties, whilst also helping to seal fluids and other liquid connections - and offer superior insulation, particularly within electronic assemblies.

The range includes a Thermoplastic Rubber Washer (TPR) that has improved chemical resistance, sealing characteristics and vibration resistance. These are a great solution for oil, gas and automotive industries. These flat rubbers are manufactured to DIN 125 standard. They also benefit from flame resistance to UL94 HB standard.

We also offer a flat washer made from Polyvinyl Chloride (PVC), which has high stiffness and fantastic electrical properties - making it ideal for use in a range of electrical assembly applications. This PVC washer provides abrasion and moisture resistance.

  • Smooth, black finish
  • Rubber washer sizes include, but are not limited to; M8 rubber washers.

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Bonded Washers

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Self-centring Bonded Washers are commonly used where hydraulic fluids and pneumatic oils are prevalent. They are an ideal option for maintenance, repair and operation applications.

Nitrile Washers are typically used with screws and bolts. The washer is made from steel and comes with a rubber O-ring seal that fits within the inside diameter of the washer. This washer and seal combination helps ensure a watertight assembly for your application.

Customers have the option to purchase a kit that contains a selection of size options that are suitable for BSP or Metric threads. This ensures quick and easy access to suitable sizes. Alternatively customers can purchase individual parts, in the thread type and specific size required.

  • Washer Material: Mild Steel
  • Seal Material: Nitrile NBR 80
  • Seal Colour: Black

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Finishing Washers

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Finishing Washers provide protection for cabinets and other applications from scratching and other damage that may occur. They also provide cover for misaligned holes that means the finished appearance of your assembly will be neat and tidy.

This high quality finish is couple with good thermal and electrical insulation properties. These washers are versatile and can also be used as glides, bumpers, feet and spacers.

  • Material: Nylon 6/6
  • Colours: Black, Natural and White
  • UL94 V2 Flame Rated

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Fixing Rings

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The Quarter Turn lock range is supplied with a range of accessories including fixing rings. These are supplied in two different types; one in Spring Steel and the other in Die Cast Zinc. They are suitable for all locks with a 20.2 x 22.2 fixing hole.

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Flare Washers

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Flare Washers are an ideal solution for retaining light weight constructions. They can also be used as a slide washer on rotation centres. The plastic material used to make these washers can be sterilised, which makes them an ideal solution for scientific and medical applications.

No special tools are required for assembly or dismantling of the washers. They are quick and easy to apply.

  • Material: Polyoxymethylene (POM)
  • Colour: Natural

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Insulating Cup Washers

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Round Cup Washers are ofter used for covering large holes, like pipe and tube ends. They are shaped like a cup or bowl and often have a flanged area beneath the head - useful for evenly distributing a load over a surface area.

It insulates the head of a metal screw from electrical currents or other conductive materials. It is resistant to corrosion, oil and other chemicals. It can be used with most screw head styles such as cheese, pan and fillister.

  • Material: Nylon
  • Colour: Natural

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Retaining Rings

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Retaining Rings act like a shoulder, which holds components and assemblies in place on a smooth shaft and can also be used in a housing or bore for one-time uses. Popular applications include retaining shafts.

They are installed into pre-manufactured grooves on axles and pins, creating a shoulder function and retaining the specified component or assembly. The ring design features a lip for easy assembly and dismantling.

  • Material: Polyoxymethylene (POM)
  • Colour: Black

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Retaining Washers

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A Plastic Retaining Washer is primarily used to hold screws and bolts in place during assembly and have a design that grips the outside of screw or bolt shank. Also known as an Anti Loss Washer, they provide insulation, cushioning and spacing. They help insulate fastening assemblies from moisture and electricity.

This washer range includes options with internal and external teeth with a tapered design. The washer easily slides on to the screw (or bolt) and is retained by the screw once assembled. The washer cold forms and fully enters the pitch of the screw to provide sealing.

These washers allow for preliminary mounting of the screw (or bolt) before securing with a nut. They are ideal when pre-assembly of the screw and washer is required. They also help reduce assembly time and cost.

The range includes material options that provide corrosion, abrasion and chemical resistance.

  • Materials: Polycarbonate (PC), Polyamide 6.6 (PA) and High Density Polyethylene (HDPE)
  • Colour: Natural

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Saddle Washers - Nylon

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Our Plastic Saddle Washers range consists of Nylon Saddle Washers.

This includes Saddle Washers suitable for the assembly of crossed round tubes. Saddle Connectors that fits to the top of a connector to attach a horizontal tube, and is suitable for the M8 range of Expander Connectors (sold separately). Additionally included are Saddle Tube Connectors, for which a solid T connection is created using an M6 Screw; they are suitable for furniture, constructions, stand builders and machinery.

A Saddle Washer is designed to accommodate pipes and tubes. They provide support to the pipe assembly during installation and application. Our Pipe Saddle Washers range is available in a choice of black and white. The Nylon 6/6 material will not cause damage to painted surfaces.

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Shoulder Washers

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Shoulder Washers, also known as Insulation Sleeves or Shoulder Bushes, are designed to provide electric and heat insulation for assemblies where this is a fundamental requirement. A type of stepped washer, they are made from a variety of materials and colours, these products are self lubrication, corrosion and abrasion resistant.

The step washer offering features shoulder bushes made from Nylon 6/6, These nylon sleeve washers are a self-lubricating option, great for anything that pivots or rotates. The are low coefficient of friction, and resistant of moisture, dirt and most chemicals. We also have a countersunk sleeve that is frequently applied in electro technical environments, and is compulsory by law in many countries. It prevents electrical corrosion with countersunk head screws.

Perhaps our wide selection of Insulation Sleeves is more suitable for your project needs? Made from a choice of natural Nylon 6 or black Nylon with a glass-fibre compound; these sleeves prevent contact with conducting materials, prevent parts from vibrating loose, and accurately locate and space assemblies.

Our nylon shouldered washers range extends with a selection of Locking and Sealing Washers. Locking and sealing types are sold separately. Screw Insulators available in a range of sizes, as well as high temperature options. The high temperature insulators also have options made from Polyphenylene Sulfide (PPS). Or just keep it simple and browse our wide range of shoulder washer and insulating washers, that have flame resistance to a UL94 V2 standard.

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Spring Washers

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Spring Washers are a type of washer that has a conical shape. This means that without the presence of a load, the washer is unable to sit flush to a surface.

Spring Washers are named as such, because they provide spring force. These handy washers also absorb shock by using axial loads to counter vibrations in an assembly. Our range can be used singly in parallel, in series and in series parallel for a wide range of deflection and load capacity applications.

They also provide electrical and thermal insulation and benefit from resistance to corrosion.

  • Material: Stainless Steel, Steel, Acetal
  • Colour: Natural, White

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Toothed Lock Washers - External

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Our Locking Washers are made from metal, with either a stainless steel or zinc plated finish. These External Tooth Lock Washers have been developed for locking screws, bolts and nuts in place, and offer ideal prevention for the loosening of PCB spacers caused by vibrations.The Tooth Lock Washer, also known as an Electrical Contact Washer, has tooth-like serrations on the external diameter that help the toothed washer prevent bolted joints from loosening, through the use of friction.Our stainless steel toothed washers offer good corrosion and wear resistance. The zinc plated external tooth washer option, is ideal for applications where a high mechanical strength is needed. The lower material cost makes it an alternative to brass, when conductivity is not a critical issue. Zinc plating provides a professional finish and is RoHS compliant.

  • DIN rated
  • Compatible Screw Sizes: M2 and M3.

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Lock & Seal washers

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Lock and seal nuts and bolts in position.

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Threaded Captive Washers

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This range of Captive Washers has a very shallow thread on the inside diameter. This means they can be screwed on, and once past the threads they will not separate from the captive screw or bolt.

How to install a captive screw and washer assembly;
1) Place the captive screw into the panel hole.
2) Thread the washer on to the screw, beyond the threaded part of the screw, which retains the screw in the panel.

The washers are made from Stainless Steel that provides good resistance to corrosion and machinability. The material is a popular choice for construction and automotive applications.

  • Material: Stainless Steel
  • AISI 303, 1.4305 and AISI 316, 1.4401
  • Finish Options: Black Oxide Coated, Zinc Plated and Titanium (Grades 2 and 5)

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Seal Washers

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Seal washers are used to provide a reliable and effective sealing solution. It features a design that creates a tight seal between two surfaces, preventing the leakage of fluids, gases or contaminants.

This range of Seal washers incorporates a silicone O-ring that helps it fit the surface and fill gaps or imperfections. They are manufactured from stainless steel, which provides good corrosion resistance and is slightly magnetic.

Seal washers are commonly used in industrial equipment and automotive applications. They are reusable and resistant to a temperature of -75C to +205C.

  • Material: Stainless steel
  • A4, AISI 316

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Stainless Vented Washers

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Vented Washers are used with vented screws to aid the quick release of gases from blind tapped holes. The washers are common for HV and UHV systems because their slot vent feature reduces virtual leakage from high vacuum systems.

This range of Stainless Steel vented washers are used with vented screws to improve the speed and performance of creating vacuums in vacuum chambers These vented washers are commonly used for industrial machinery or automotive components.

  • Material: Stainless steel
  • AISI 303, 1.4305

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