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Nut Caps

Variations Of Nut Caps

Domed Nut & Bolt Caps
our nut & bolt caps are an excellent choice for the covering and protection of exposed nuts or bolts. Also known as plastic nut covers or even plastic bolt covers, these caps have a domed hex head which allows them to be screwed onto the head of a nut or bolt to provide instant covering and protection benefits, preventing the bolt from being tampered with. Hex nut covers are a widely used cost effective solution inside a multitude of industries, being a number one solution for nut and bolt protection. These are a form of plastic fixings or plastic panel fixings that is able to easily be placed over the nut head, providing protection and many other benefits.
Locking Nut Caps
These 'locking' versions of the standard Plastic Nut Covers are suggested for many uses where tampering would be an issue, preventing the bolts or nuts from becoming ineffective and potentially causing damage. It is for this reason that they are so commonly used with playgrounds or school equipment, meeting and adhering to all health and safety guidelines which frequently arise.

Our Plastic Nut Caps or simply Plastic Nut Covers as they are also known, are a hugely popular product for the general protection of a nut or bolt and are available in either Locking or Domed types. Each cap is manufactured from a high quality form of LDPE Plastic or Polypropylene (depending on choice of locking or domed) and comes in a range of RAL or primary colour-ways to provide a clean finish to your application. Typically our 'Locking Nut Covers' are used with playground equipment, where access to the nut or bolt must be restricted to meet health and safety requirements. 

Nut Protection Caps are recommended to improve the security of your installation, restricting the ability for tampering as well as improving the aesthetic over an exposed nut. Our range is available in a number of industry standard BSP and metric sizes from M4 up to M24 however we are also available to manufacture upon request.

Please note that we offer both locking and standard domed version of these plastic nut covers

Benefits Of Using Our Plastic Nut Caps:

  • Manufactured from high quality LDPE Plastic or Polypropylene
  • Provides excellent protection of the nut head 
  • Domed head and locking versions available
  • Available in primary and RAL colour ways

Commonly Used For:

  • To prevent tampering with playground equipment
  • To provide an aesthetic finish to a nut head
Need specific Nut Protection Caps for your application? Call us today on 01233 713 581

What Delivery Services are available?
We offer free 3-5 Day Delivery for orders over £20 and a £2.85 2nd Class delivery service for orders between £10-£20. We also offer Next Day Delivery for £12.50 along with Guaranteed AM Delivery if required, collection can be arranged free of charge from our warehouse. For international shipping prices please use the shipping calculator on the cart page, once a product is inside your cart.

Can I get a Free Sample?
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 over Live Chat to discuss samples.

Do I need to Sign Up for an account?
You do not need to sign up to place an order, but it is recommended if you'd like to gain loyalty points, giving discount off future orders. To learn more about loyalty points, please see our Rewards Scheme page.

I am not sure what parts I need?
If you're unsure of what 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 regularly active on the Live Chat and are always open for questions. 

Do you offer Returns on Products?
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.

Can you supply different colours of this product?
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.

Is there a minimum order value?
Please note that there is a minimum order value of £10 through our website (inclusive of VAT).

To view our full Frequently Asked Question section, please click here

To find out more about the different material abbreviations used on site, please click here

Welcome to Vital Parts
One of the largest and most trusted Plastic & Rubber Component Manufacturers in the UK.


We are able to offer 30 day end of month accounts to businesses who regularly use our products, with priority free samples, priority delivery and your very own dedicated account manager. As a manufacturer we offer a comprehensive range of components, covering almost every industry imaginable. We hold an un-beatable range of sizes and product options, so be sure to look around. We are always here to give you support as and when you need it, with Live Chat and Telephone Support available between 9am to 5:30pm, Monday to Friday. Get in touch, we would love to speak to you. We operate a 24 hour dispatch service so that you can get your goods quickly and efficiently, with a final cut off time of 4pm. Order before 4pm with next day delivery for a 24 hour turn-around.


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Vital Parts UK, Unit 17 Palace Industrial Estate, Bircholt Road, Maidstone, Maidstone, ME15 9XU