Self Threading Nut Caps
Our Self Threading Nut Caps, also known as Thread Caps, Nut Caps or Bolt Caps, are made from high quality LDPE anmd are designed to be easily installed to protected exposed threads. These Stud Protection Caps are used to conceal fasteners, but can also offer protection to the otherwise exposed threads from dirt, damage, corrosion or injury.
Our Self Threading Nut Caps are designed to be screwed onto the thread of an existing stud or bolt, where the internal ribs are threaded as the cap is inserted. This provides a strong connection, making it hard to be accidently removed, and provides and excelent seal around the bottom lip protecting the fastener from the elements. Our Self Threading Nut Caps have a hex head allow the user to use a spanner or wrench when threading this cap onto the bolt or stud. Our range is suitable for threads from M36 to M48, and are available in several lengths per size.
Our range comes in black as standard, but we are able to offer custom batches in any RAL colour required. For further info on custom colour runs, please get in touch on 01233 713581.
Our LDPE can widstand constant temperatures of 70ºC , and is resistant to:
- Seawater
- Non-Oxidising Acids
- Non-Oxidising Alkaline Solutions
- Alcohol
- Fuels
- Oils
- Greases
We also offer Secure Nut & Bolt Caps and Domed Nut & Bolt Caps.
Where are Thread Protection Caps commonly used?
Thread protection caps are commonly used in the following applications:
- Flanged Assemblies
- Outside and Industrial Lighting
- Bridges
- Playgrounds
- Marine Systems
- Road Guardrails
Looking for a custom style or variant for your use? Call one of our experts on 01233 713 581
Frequently Asked Questions
Self Threading Nut Caps feature an internal thread-forming design that grips directly onto the exposed thread as the cap is screwed into place. This creates a secure fit without the need for a matching nut beneath the cap.
Yes. Self Threading Nut Caps are ideal for protecting exposed threaded rods, threaded studs and bolts, helping prevent thread damage, corrosion and accidental injury from exposed threads.
Yes. Self Threading Nut Caps cover exposed threads, helping reduce the ingress of moisture, dirt and other contaminants that can lead to corrosion and premature thread wear.
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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 £20 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.