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Round Square Head Plastic

 (111 product groups)

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Fluid Absorption Plugs

These Fluid Absorption Plugs are meant to reduce fluid excess residue by absorbing and holding fluids, preventing leak damage and contamination from entering the application, such as water, oil, substances with intrinsic chemical resistance, and fuel.

They are safer, simpler, and cleaner than traditional plugs since they leave no residue in the thread or hole. They are appropriate for metric and imperial threads and simple boreholes.

Its unique design enables rapid and easy installation and removal, saving money and time. Used in industries such as automotive, chemical, and environmental. They are commonly used in areas where the potential for fluid leaks or spills exists, such as around machinery, storage tanks, or transportation containers.

Series Code :SR1004

Fluted Grip Knobs

Male Grip Hand Knobs have a knurled texture around the outside of the handle creating a firm gripping surface that is also comfortable. These high-impact durable knobs fit onto female applications and are resistant to oils, fuels, and greases.

Fluted Grip Knobs - Threaded Insert

Female Grip Hand Knobs have rough ridges around the outside of the handle creating a firm gripping surface that is also comfortable. These durable knobs fit onto male applications and are resistant to oils, fuels, and greases.

Grease Nipple Caps

Grease Nipple Caps are designed to protect grease nipples from dust, moisture, dirt, and other contaminants. Our range offers a selection of caps with a tab, or without a tab, to make it easier to remove. The design of the cap provides a choice of knurled or non-knurled heads for easy gripping. These grease nipple caps can also be used as a visual indicator of whether the fitting has been lubricated.

These are an economical solution that is quick and easy to install and remove.

Used in fluid transmission applications that have grease nipples.

  • Designed to protect from dust, moisture, dirt, and other contaminants.
  • Quick and easy to install and remove.
  • Suitable for use in machinery, equipment, vehicles or any application that uses grease nipples.
Material: TPE, LDPEColour: Black, Red, YellowMaterial Flammability Standard: Series Code: SRPITPE, SRPI, SR1019

Grommet Nuts

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

Heat Shrink End Caps

Heat Shrink End Cap is an electrical component ideal for sealing or insulating and protecting threaded or unthreaded pipes, tubes and rods. Used to provide protection against dirt, debris, moisture, dust and UV radiation. It is designed with a thick adhesive inner liner wall.

These caps shrink when heated, offering maximum protection for the application. They can operate at temperatures between -55C and +110C and are easy to install and remove.

  • Material: PO
  • Colour: Black
  • Series Code: SR1180

Heavy Duty Pipe Caps

Heavy Duty Pipe Caps are used to protect the end of a pipe from dust, dirt, and other impurities. They are appropriate for nominal pipe sizes and provide a low-cost, high-quality choice. Internal ribs ensure a snug fit and release after pressure is applied. The caps come with or without a vent hole.

Used to keep small pipes safe during transportation and storage. It is also simple to install and remove, thanks to the press fit design. Temperature resistance ranges from 66C to -40C. Used in plumbing, heating, ventilation, and industrial applications.

  • Material: PE
  • Colour: Black, Yellow


Series Code :SR1389

High Temperature Tapered Plugs

This range of high temperature masking plugs features Silicone Rubber Tapered Plugs, EPDM Tapered Plugs and other Tapered Rubber Plugs made from Thermoplastic Rubber (TPR).

This extensive range of Tapered Plugs is available as a solid plug or with a hollow core, to aid in compression. Solid and hollow core options are available in our EPDM and High Temperature Silicone Plugs ranges. The hollow centre provides a cost-effective solution for larger sizes. The hollow design is more flexible than solid plugs, and allows for easier application.

Our Tapered Rubber Plug range features Univesal Plugs made from TPR. The tapered plug is designed to mask holes without masking the surrounding areas, and a pull tab allows for easy installation and removal. Suitable for temperatures up to 125C.

  • Colours: Black, Blue, Green, Natural, Pink, Red and Yellow
  • Simple push-fit design

Hose Washer Caps

Hose Washer Caps are applied on the hose and tube ends to prevent them from sliding over the fittings. It features a tight-fitting design that helps to prevent water, dust, dirt and other contaminants from getting into the hose.

They are simple to install and remove and provide an airtight seal to maintain the integrity of the hose connector. It is used in construction applications, gardening, and the automotive industry.

  • Material: TPE, LDPE
  • Colour: Black, Yellow


Series Code :SR5758

Knurled Thumb Nuts - Cone / Plastic

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

Knurled Thumb Nuts - Round/Plastic

Thumb Nuts, also known as Knurled Nuts, are a type of nut with a knurled outside diameter (surface). This design facilitates manual tightening by hand, and also secures the nut into a handle or cover.

Our knurled thumb nut offer features plastic thumb nuts made from Nylon 6/6; a strong, tough and durable material that is ideal for connecting elements and other technical components. It has self-lubricating properties, and is resistant to moisture, vapour and salt water. Operational temperatures can go up to 100 to 120C, temporarily for non-critical parts. Many nylons are self-extinguishing.

Our nylon thumb nut range also includes options made from Nylon with 30% glass fibre compound. This option is resistant to numerous fluids and chemicals, and is ideal for technical products requiring high dimensional stability and durability at higher operating temperatures. It has good strength and stiffness, in combination with good impact qualities. Excellent for heavy duty handles.

We also offer natural Polycarbonate (PC) plastic knurled thumb nuts. The strong PC material provides an aesthetically pleasing joining solution for applications in Retail and Point of Sale, for example.

  • Quick and easy
  • Tool-free installation and removal
  • Colours: Black, White and Natural.

Machine Feet - Standard

Our range of Standard Machine Feet made with zinc-plated steel stud and a Polyamide (PA) base, are made to support machinery, electronic racks and conveyor belt applications. The feet have a maximum of 20 degree articulation and can be purchasesd in variants either with or without bolt holes. Additional non-slip pads can be purchased separately when extra friction is required.

Series Code :SR1545

Machine Screws - Square

These Square Machine Screws are utilised in various situations where the benefits of a square head shape are coupled with the advantages of plastic material. It is a lighter, corrosion-resistant alternative to metal machine screws.

It is appropriate for electrical applications with minimal shock or short circuit risk. Furthermore, it is corrosion resistant, making them appropriate for use in areas where exposure to moisture or chemicals is a problem. Because they are lightweight, they lower the total weight of the assembly, making them useful in applications where weight reduction is needed.

It provides increased grip and torque transmission, making it perfect for applications requiring secure attaching with the ease of hand tightening. Commonly used in industries such as electronics, automotive, and consumer goods.

Masking Flangeless Plugs

Masking Flangeless Plugs are a type of plug that is used to cover holes without masking the surrounding area. They protect against contaminants, dust, dirt, damage, or undesired substances. It features conical rings and a hollow core, which allows many different areas to be masked.

Furthermore, the pull tab makes them simple to install and remove, allowing for smooth insertion and a snug fit that eliminates unwanted leaks or seepage. The reusable nature of the material used in these plugs allows for various uses, minimising the need for frequent replacements and helping to reduce waste. They can be utilised in multiple applications, such as powder coating, painting, plating, and sealing.

  • Material: EPDM, Silicone, TPE, PVC
  • Colour: Black, Natural, Blue, Green, Purple, Orange, Yellow, Pink, Red


Series Code :SR1090, SR1093, SR5748, SR1034

Masking Pull Plugs

Masking Pull Plugs, also known as silicone masking plugs, are plugs used to mask threaded and non-threaded holes. They resist chemicals, dust, dirt, temperature changes, and abrasion. Furthermore, the pull tab simplifies installation and removal, allowing for smooth insertion and a secure fit that avoids undesired leaks or seepage.

The reusable material used in these plugs allows for various uses, reducing the need for frequent replacements and contributing to waste reduction. They can resist temperatures of up to 250 degrees Celsius and are used in various applications, including powder coating, sealing, automotive assembly, and electronics production.

  • Material: Silicone, EPDM, Silicone Rubber, TPR
  • Colour: Natural, Black, Clear, Red, Grey, White, Purple, Green, Pink, Orange, Yellow, Blue


Series Code :SR1057, SR1094, SR6118, SR6117, SRF0060, SR5750, SR5749, SR5752, SR1028

Masking Straight Caps

Straight Caps are an ideal solution for protecting and masking parts undergoing a variety of masking processes, including; painting, plating, powder coating, anodising, sand blasting, abrasive chemical processing, and processes that expose parts to high temperatures. They are highly versatile and can also be used as a plug to mask threaded or non-threaded holes.

These Masking Caps and Plugs can be used to protect studs, pins, tube ends and other applications that require protection. They are available in a choice of materials with a wide range of colour options to suit your project requirements.

  • Materials: Ethylene Propylene Diene Monomer (EPDM) and Silicone Rubber
  • Colours: Black, Blue, Green, Grey, Natural, Orange, Pink, Purple and Yellow


Series Code :SR1052, SR1095

Masking Washer Plugs

These High Temperature Washer Plugs are used to mask the surface around a threaded or plain hole, with an integrated washer and plug that allows them to function as a single item. They are long-lasting and resistant to chemicals, temperature changes, and abrasion.

These plugs are simple to install and remove, and their design assures a snug fit, a secure seal, and the prevention of leakage or contamination. They can withstand high temperatures of up to 250 degrees Celsius and are used in various applications such as powder coating, painting, plating, sealing, automotive assembly, and electronics manufacturing.

  • Material: Silicone, EPDM
  • Colour: Grey, Natural, Black, Clear, White, Dark Green, Yellow, Pink, Purple, Red


Series Code :SR1065, SR1092, SR5753

NPT Thread Plugs

NPT thread plugs are used to seal and protect the ends of BSP/NPT threaded pipes and fittings. Their robust design allows them to withstand high pressure, temperature, corrosion, dirt, and damage during storage and shipment.

Additionally, their tapered form allows the component to plug numerous inner diameters, assuring a tight and leak-free fit. They are simple to install due to their push-fit mounting style and are used in plumbing pipes, HVAC, automotive, and industrial applications.

  • Material: LDPE
  • Colour: Blue


Series Code :SR1114

Nail-On Glides

Nail-On Glides, or Nail-On Feet, are ideal for wooden furniture legs for optimum floor protection and in helping reduce noise. These glides easily knock into place and are provided in various finishes for a smooth glide action.

Our nail-mount Glides come in a choice of base materials, including; High Density Polyethylene (HDPE), Chrome, Polyamide (PA), and Polytetrafluoroethylene (PTFE) - plus a PTFE with Felt option, all supplied with a Steel nail for added convenience and value.

  • Shape: Round
  • Colours: Woodtone, Grey, Brown and Natural.

Non-Threaded End Caps

Non-Threaded End Caps are ideal to securely protect non-threaded or threaded tubing, pipe or rods. Keeps out dirt, debris, and other contaminants. Has some abrasion resistance, which keeps the mating part safe during storage and shipping. Can also be used for masks in painting, plating or sand blasting applications.

Quick and easy to install and remove.

Can be used for plumbing, HVAC, and industrial applications.

  • Securely protects threaded or non-threaded tubing, pipes, and rods.
  • Quick and easy to install and remove.
  • Used for plumbing, HVAC, and industrial applications.
Material: PE, PP, LDPE Colour: Yellow, Black, Grey, Natural, Blue Series Code: SRF0023, SR1062

O-Ring Face Seal Caps

Our range of O-Ring Face Seal Caps are designed to protect O-Ring face seal connectors that are used on hydraulic connections.

The cap design features a longer overall length for added protection from the ingress of dirt and other contaminants. They also include a moulded retaining ring at the bottom that snaps under the connector to keep it securely in place during transit and processing.

Our range is suitable for both UNF and JIC thread sizes.

  • Designed for the protection of O-Ring face seal connectors used on hydraulic connections.
  • Features a longer overall length for added protection.
  • Suitable for UNF and JIC threads.
Material: LDPE Colour: Black, Blue Series Code: SRCFST, SR1078

Open Grommets - Quick Fit Grommets

Quick Fit Grommets, also known as Open Grommets, snap neatly and quickly into position. These simple Open Rubber Grommets have a beveled edge that allows for quick fit installation, requiring pressure from only one side to easily and quickly secure into a panel.

Grommet - Open Type are ideal when access to the other side of the panel is restricted. Our Open Grommet range is available in a choice of rubber materials, including; Polyvinyl Chloride (PVC), Thermoplastic Elastomer (TPE) and Silicone Rubber.

  • Colour: Black

Pozidrive Screw Caps

These Pozidriv Screw Caps are designed to cover Pozidriv (Phillips or Crosshead) screws, providing a seamless and finished look. They offer a simple and quick installation by push-in.

These screw caps are designed to fit snugly over the screw head, providing a secure and tight seal that prevents dust, dirt, and other debris from entering the assembly. They also protect the screw head from damage and corrosion. Ideal for use in applications such as furniture, appliances and electrical.

  • Material: LDPE
  • Colour: Black, Brown, Grey, White

Pull Handles - Arch Shape Plastic

Arch Shape Pull Handles are lightweight and provide a clean finish. This range of handles includes many different sizes and styles to suit a wide range of applications including; electrical and machining, cabinet making, and others. As well as serving a host of sectors, such as; hospitality, health care, transport services, manufacturing and more.

The range features ergonomic options and options that are more geared toward heavy duty applications, like machine applications. The many styles and forms of these pull handles benefit from a wealth of properties such as; impact resistance, stability, weather and UV resistance - this means the range is highly flexible and versatile in not only how they are used, but also in where.

  • Material: PA, Nylon, Reinforced Polyamide Based Technopolymer
  • Colour: Black, Orange, Grey, Green, Yellow, Blue, Red, White
  • Front and Rear mounting options

Pull Tab Caps

Pull Tab Caps are designed to protect applications from contamination and spillages. The pull tab design provides more surface contact area, requiring less gripping force during installation and removal.

The tabs are particularly usefull in applications requiring fast removal during mechanical process and for this reason are a popular choice across various industries.

The flexibility of the materials used allows for a tight fit on to applications. The addition of the tab makes them an essential selection.

  • Designed to protect from contamination and spillages.
  • Flexible design means it can strech on to slightly larger dimensions for a snug fit.
  • Used in the food industry, industrial applications, or storage applications.
Material: LDPE, EVA, PVC Colour: Yellow, Black, Red Series Code: SRQCF, SR6110, SR1066

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