Thread Protection Nut and Washer Caps
Our Thread Protection Nut and Washer Caps, also known as Nut Caps, Washer Caps, Bolt Caps or Protective Nut Covers, are designed to cover exposed nuts, washers, threaded studs and bolts, providing long-lasting protection whilst creating a neat, professional finish. These protective caps help prevent injury from exposed fasteners whilst reducing the ingress of dirt, moisture and contaminants that can lead to corrosion and premature fastener failure.
Widely used across the construction, engineering, utilities, marine and infrastructure industries, Thread Protection Nut Caps help extend the service life of exposed fixings by shielding nuts, bolts and washers from harsh environmental conditions. By reducing corrosion and weathering, these nut and washer caps minimise maintenance costs whilst improving the safety, appearance and durability of assembled structures.
Manufactured from durable LDPE (Low-Density Polyethylene), our Thread Protection Nut and Washer Caps are supplied in black as standard, with custom RAL colours available for larger production runs or colour-coded installations. Their flexible push-fit design enables quick installation without specialist tools whilst providing a secure fit over a wide range of fastener sizes.
Key Material Features:
- Manufactured from durable LDPE (Low-Density Polyethylene)
- Continuous operating temperatures up to 70°C
- Excellent resistance to seawater, fuels, oils, greases, alcohol and many acids and alkaline solutions
- Non-conductive with low water absorption
- Weather-resistant and suitable for indoor and outdoor applications
Common Applications:
- Structural steelwork and flanged assemblies
- Furniture and street furniture
- Bridges, highways and road guardrails
- Playgrounds and recreational equipment
- Marine systems and coastal installations
- Electrical engineering and utility infrastructure
- Industrial machinery and engineering equipment
Need a Custom Solution?
Looking for a custom size, colour or style of Thread Protection Nut Cap or Washer Cap? Contact our experienced team on 01233 713 581 to discuss your application or bespoke manufacturing requirements.
Frequently Asked Questions
Thread Protection Nut and Washer Caps are manufactured from durable LDPE (Low-Density Polyethylene), offering excellent flexibility, impact resistance and long-lasting outdoor performance.
Thread Protection Nut and Washer Caps simply push over an installed nut and washer, enclosing the exposed fastener to create a secure protective cover without requiring additional fixings.
Yes. Manufactured from weather-resistant LDPE, Thread Protection Nut and Washer Caps are ideal for outdoor environments including bridges, fencing, playgrounds, highways, marine installations and structural steelwork.
Need your parts tomorrow? Our rapid same day dispatch has got you covered! Simply place your order before 4pm Mon-Thurs or 2pm Friday and select our Next Day Delivery service in the shopping cart. We also offer Guaranteed AM delivery when required, in addition to a Saturday delivery option.
If you don't mind waiting, we have a Free delivery method for orders over £30, and an economic £4.85 2nd Class delivery for orders between £20-£30.
Free Samples can be requested through our product pages, displayed in the sizing table beside the product you require. Please note you can always give us a call on 01233 713 581 or contact us on Live Chat to discuss samples.
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If you're unsure which part you need then please do not hesitate to give one of our friendly Sales Team a call on 01233 713 581 and they can assist you. Alternatively, we're active on Live Chat during office hours. You can open this using the button in the bottom right corner of the website. Alternatively, you can write to us using our contact form.
We offer a return period on all of our products to give you peace of mind, to view our policies and learn more about this process should it be required, please see our returns policy page.
In most cases we have the facilities to offer you different colours of a product, specific to your requirements. Minimum order quantities may apply depending on the manufacturing technique in question, but please get in touch with any queries you may have.
Please note that there is a minimum order value of £10 through our website (inclusive of VAT).
If you're new to our website you may want to check out our frequently asked questions section for answers to common customer queries.
While browsing the website you may come across abbreviations used for material names that you are unfamiliar with. You can find an explanation for these in our material abbreviations guide.
