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Nuts & Washers

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Cylindrical Steel Nuts

In stock In production

Cylindrical Steel Nuts are fasteners that are commonly used in conjunction with lead screws or ball screws to convert rotary motion to linear motion. The nut is threaded onto the screw and moves along the length of the screw as it rotates, providing smooth and precise linear motion.

They are used for low rotational speeds, manual control, and clamping functions. It is not suitable for motorised movements. It has internal threads that match the screw, which ensures exceptional durability and wear resistance due to the material.

It is used in the automotive, aerospace or construction industries to secure lead screws in place. Available as standard right-hand thread cylindrical steel nuts as well as left-hand threaded.

  • Material: Steel (EN10277-3, 11SMnPb37)
  • ISO 2901/2903 and DIN 103

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Flanged Ball Nuts

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Flanged Ball Nuts are an essential component of ball screw assemblies. They are precision mechanical components used in linear motion systems. These nuts, as the name implies, include a flange, which is a flat, projecting rim that extends from the nut and offers additional support and ease of installation.

It's used in conjunction with ball screws to convert rotary motion to linear motion. Ball bearings in the nut roll along the ball screw as it turns, giving smooth and precise linear motion. The flange features a tight tolerance, ensuring minimum backlash and high precision and accuracy.

These are widely utilised in a variety of industrial applications, including in automotive, aerospace, and medical equipment.

Please keep in mind that removing the ball nut from the sleeve provided can cause the ball bearings to come loose, rendering the ball nut useless.

  • Material: Steel (16MnCr5 or 100Cr6), with Vulkollan seals
  • DIN 69051 form B

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Flanged Bronze Nuts

In stock In production

Flanged Bronze Nuts are an important part of lead screw assemblies, extensively employed in linear motion systems. It is intended for manual or motorised applications at low rotational speeds under load, and it has a smooth surface that reduces lead screw wear.

They are extremely durable and have an element of self lubrication. The bronze material also assures dependable performance, making them one of the most popular nut choices in lead screw assemblies.

These are widely utilised in a variety of industrial applications, including in automotive, aerospace, and medical equipment.

Available as standard right-hand thread flanged bronze nuts as well as left-hand threaded.

  • Material: Bronze

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Hexagon Steel Nuts

In stock In production

Hexagon steel nuts give a solid grip while preventing loosening due to vibration or motion. They are simple to tighten and relax with a normal wrench or pliers. Hexagon steel nuts give a solid grip while preventing loosening due to vibration or motion. They are simple to tighten and relax with a normal wrench or pliers. They are used with steel or stainless steel lead screws for low rotational speeds, manual control, clamping or locking actions, and dead weight reception.

Due to its material, it is used in applications that need high strength and durability but require lubrication to prevent the nut seizing with the screw.

These are widely utilised in a variety of industrial applications, including in automotive, aerospace, and medical equipment. Available as standard right-hand thread hexagon steel nuts as well as left-hand threaded.

Please note: Steel to steel contact surfaces are inappropriate for motorised motion

  • Material: Steel (EN10277-3, 11SMnPb37)
  • ISO 2901/2903 and DIN 103

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Lock Nuts - Slip-On

In stock In production

These Slip-On Lock Nuts are designed for speedy assembly and tight fixing, preventing screws or bolts from spinning, sliding, or coming free. It eliminates the need for time-consuming winding and unwinding on lengthy threads and the risk of breaking the threads.

It is zinc plated for corrosion resistance and may be slipped over broken or bent studding up to a 20-degree angle. It is suitable for use outside and is both maintenance-free and reusable. It assembles and disassembles 50% faster, saving time and effort in usage.

Simple to install in confined locations and does not require a specialised spanner. Simply open the lock nut, position it as desired, and then tighten it with a spanner. In addition, it can withstand temperatures of up to +150C. Commonly used in construction, scaffolding, automotive, and mechanical applications.

  • It may be slipped over broken or bent studding up to a 20-degree angle.
  • It is reusable and assembles and disassembles 50% faster, saving time and effort in usage.
  • It can withstand temperatures of up to +150C.
Material: SteelColour: Material Flammability Standard:

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Square Nuts

In stock In production

In this range used with lead screws, you will find a wide range of Square Nuts depending on your needs: Square Bronze Nuts with fixing holes, Square Brass Nuts, Square Steel Nuts and Square Steel Nuts with Fixing holes.

  • Square Bronze Nuts with through holes are used when a secure and robust connection is needed. It provides stability and strength, making it suited for medium-duty applications. It has through holes suitable for cap head screws.
  • Square Brass Nut is used in applications where fairly light loads are required. It is sturdy and resistant to corrosion, moisture, and other factors.
  • Square Steel Nuts are utilised in applications that need slow rotational speeds, manual control, clamping or locking actions.
  • Square Steel Nuts with Holes are used for applications with low rotational speeds, manual control, and locking functions. It has through holes suitable for cap head screws.

These are widely utilised in a variety of industrial applications, including in automotive, aerospace, and medical equipment. Available as standard right-hand thread square nuts as well as left-hand threaded.

Please note: Steel to steel contact surfaces are inappropriate for motorised motion.

  • Material: Bronze (CuSn7ZnPb) , Steel (EN 10277-3, 11SMnPb37), Brass (EN 12164, CW614N-M).
  • ISO 2901/2903 and DIN 103.

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Bonded Washers

In stock In production

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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Button Thread Nuts - Kwik Nut

In stock In production

These Button Thread Nuts - Kwik Nuts are designed to provide a secure and rapid fastening mechanism. Simply push down the thread length to the correct location and lock it in place with a 180 turn for press-fit installation.

It produces a more secure fastening by reducing the danger of nut back-off due to vibrations or dynamic loads. It also makes them particularly ideal for applications involving severe weights or high-pressure situations, assuring excellent performance and lifespan of the secured assembly. Used in applications such as electronics, automobiles, and heavy machinery.

  • Material: PA
  • Colour: Black
  • Material Flammability Standard: UL94 V-2

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Cage Nuts

In stock In production

Cage Nuts can be applied to square holes, and are commonly found on mounting rails of equipment racks. They offer ideal protection for equipment from stripped threads, and provide handy mounting of server rack equipment.

The combination of a square hole and cage nut is used within rack systems, as this allows for a choice of nut and bolt sizes to be used. If threads are damaged, the metal nut can be easily repleased, as the sheet metal is too thin to tap or thread.

Our Cage Nut range comprises of Steel Cage Nuts that are natural in appearance. A great tool-free option available in M5, M6 and M8 thread sizes.

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Cylindrical Bronze Nuts

In stock In production

Cylindrical Bronze Nuts are used with our lead screws to convert rotary motion into linear motion. The nut is threaded onto the screw and moves along the length of the screw as it rotates, providing smooth and precise linear motion.

Ideal for manual or motorised applications at low to medium rotation. It has internal threads that match the screw, which ensures exceptional durability and wear resistance due to the material. Made of Bronze which has better corrosion resistance than steel but is less strong or heat resistant.

It is used in the automotive, aerospace or construction industries to secure lead screws in place. Available as standard right-hand thread cylindrical bronze nuts as well as left-hand threaded.

  • Material: Bronze
  • ISO 2901/2903 and DIN 103

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Dome Nuts - Metal

In stock In production

Dome nuts, also known as acorn nuts, are a type of nut that has a rounded, dome-shaped head. The dome nut's head protects the application's bolt or screw from damage and aids in the prevention of loosening. Additionally, they protect from exterior elements such as dust, debris, moisture, and corrosion.

Easy to install and remove by screwing it. This range offers some dome nuts with a silicone seal to offer greater seal and security to external factors. Commonly used in industrial, automotive, medical and food production applications.

  • Material: Stainless Steel, Mild Steel

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Dome Nuts - Nylon

In stock In production

Dome Nuts, also known as Cap Nuts and Acorn Nuts, is a type of nut that has a domed end on one side. As such, a Dome Nut is ideal for covering and protecting a bolt or screw in a wide range of applications.

Made from Nylon 6/6, these Nylon Acorn Nuts not only protect the bold threads under the nut, but also provide a tidy appearance. A Cap Nut may also improve safey on some joints and applications. When an assembly needs a smooth finsih, or you wish to hide or disguise the fasteners and exposed threads of an application, Plastic Dome Nuts are the ideal solution.

  • Nut Shape: Hexagonal
  • Colours: Black and Natural
  • DIN 1587

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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

In stock In production

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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Flange Hex Nut - Plastic

In stock In production

Flange nuts are hexagonal nuts with a wide flange that spreads the nut's load over a wider surface area. This makes them excellent for applications requiring a strong clamping force while avoiding damage to the mating surface.

Its hexagonal form provides numerous sides for a secure grip, making installation and removal with sockets or wrenches simple. The flange gives an additional layer of rigidity, preventing the nut from loosening owing to vibrations and torsion. Used in the automotive, manufacturing, and electrical industries.

  • Material: Nylon
  • Colour: Natural, White

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Flare Washers

In stock In production

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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Flat Washers - Metal

In stock In production

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 - Plastic

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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 - Rubber

In stock In production

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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Grommet Nuts

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Grommet Nuts are used for a secure threaded connection between two panels and are often purchased alongside our U-Nut Grommets

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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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Integral Seal Bolts

In stock In production

Sealing bolts are a type of fastener designed with an o-ring to provide secure bi-directional protection against contaminates such as gases and fluids in various applications, minimising the risk of damage to sensitive equipment. They prevent the entry of water, dust, or other contaminants, ensuring a secure, reliable connection.

This range of sealing bolts with a hexagonal head, incorporates an O-ring which is compressed, squeezed into a precision groove machined under the head of the bolt, and the mating surface to complete the seal. They are manufactured from stainless steel, which provides good corrosion resistance and is slightly magnetic.

Integral Seal Bolts are used in threaded and non-threaded holes in applications such as pipes, valves or pumps.

Sealing bolts are used in threaded and non-threaded holes in applications such as cabinets or used in the automotive and electric industries.

Please note: Our seal bolts are designed for use in applications where sealing properties are required. It could be confused with standard fasteners, these do not require sealing properties and with an O-ring you will not get a sealing property like you get with seal screws and may damage the ring.

  • Material: Stainless Steel
  • AISI 303, 1.4305 or AISI 316, 1.440
  • Tensile strength: 550 N/mm² or 480N/mm²

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Integral Seal Domed Nuts

In stock In production

Integral Seal Nuts are a type of fastener with an integrated sealing feature, combining the functionality of a nut and a sealing component into a single unit. These nuts provide reliable protection while simplifying the assembly process and eliminating the need for additional sealing components. They prevent the entry of water, dust, or other contaminants providing bi-directional sealing.

This range of Integral Seal Domed nuts incorporates an O-ring which is compressed and squeezed between the nut and mating component. They are suitable for temperatures from -100C to +260C and are reusable.

Integral Seal Nuts are used in applications such as cabinets or used in the automotive, machinery and electric industries.

  • Material: Stainless Steel
  • AISI 303, 1.4305
  • Tensile strength: 550 N/mm²

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Integral Seal Hex Nuts

In stock In production

Integral Seal Nuts are a type of fastener with an integrated sealing feature, combining the functionality of a nut and a sealing component into a single unit. These nuts provide reliable protection while simplifying the assembly process and eliminating the need for additional sealing components. They prevent the entry of water, dust, or other contaminants providing bi-directional sealing.

This range of Integral Seal hexagonal nuts incorporates an O-ring which is compressed and squeezed between the nut and mating component. They are suitable for temperatures from -100C to +260C and are reusable.

Integral Seal Nuts are used in applications such as cabinets or used in the automotive, machinery and electric industries.

  • Material: Stainless Steel
  • AISI 303, 1.4305 or AISI 316, 1.440
  • Tensile strength: 550 N/mm² or 480N/mm²

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Knurled Thumb Nuts - Cone / Plastic

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These knurled nuts have a conical design. They feature a knurled outer surface that ensures a secure grip, allowing them to be tightened and loosened quickly and easily without the use of tools. In addition, the textured pattern improves grip, eliminates slippage and ensures a solid hold.

The tapered design also provides greater pressure distribution, resulting in a more even and secure tightening. Its plastic material allows it to withstand repeated use exposed to various weather conditions and resist corrosion or rust. Common applications include electronics, automotive, industrial machinery and switchboards.

  • Material: Nylon
  • Colour: Natural

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