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Secure Nut Caps

Our Secure Nut Caps or Nut & Bolt Protection Caps as they are also known, are made from a strong Polypropylene and are made up from two main parts, these being the base and the locking cap. For installation, the base is initially placed over the Nut / Bolt which you want to prevent access to, the covering cap is then pushed into place over the top, locking it and preventing access or tampering. Secure Nut Caps are a very popular solution for projects such as a Children’s Play area due to the security that they provide, preventing the covering cap from being removed once in place. 

We stock these Locking Caps in a number of common bolt and nut sizes, as well as a selection of popular colours suited to Educational & Industrial based uses. For all available sizing and pricing options, or to request a free sample, please see the listings available below.

Please note we offer both locking and standard domed version of these covers, as seen below.

Benefits of our Locking Nut & Bolt caps:
  • Available in Black, White, Blue, Green & Yellow M6-12
  • Made from a sturdy Polyproylene
  • Two part design with locking cap included
  • Available for free sampling where required
Need a custom colour of Locking Nut & Bolt caps? We're always here to help, call now on 01233 713581.

Variations Of Secure Nut Caps

Secure Nut & Bolt Caps
These secure nut & bolt caps are some of our most popular locking nut & bolt caps that sits easily over the top of the nut or bolt, with the locking cap being placed over the top once in place for instant tampering benefits. They are an ideal alternative to snap fasteners which can act as a bolt cover to protect the nut or bolt. These Nut & bolt protection caps are most commonly used inside children's play area's so that bolts and nuts can't come loose, preventing potential damages or accidents from being caused. These secure caps are a quick to fit solution and are relatively cost effective, we also keep a range of thread types in stock ranging from M6-12, with custom solutions available where required. Despite being a popular choice of Nut & Bolt protection caps these are a form of panel fixings due to their ability to be fixed to a panel and potentially fix something additional to the panel.
Domed Nut Caps
As a more standard part than their locking friends, these tend to be a cheaper solution as they come in one piece rather than two. Despite not providing as much security, these domed versions tend to be a go-to product due to their ease of use and installation. When directly comparing locking nut caps or locking bolt caps to their domed counter-parts, it is clear to see their separate uses and installations.

Please click through to find all available product sizes.
For all relevant product information, or to view our available guides, please see the full category description above.


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


Being one of the most trusted components manufacturers and distributors in the UK, we pride ourselves on providing our customers with the best services and products possible. Ensuring that we stay competetive by providing you with the best deal, along with free samples and secondary finishing services to give you the best outcome possible. As well as offering an excellent range of components we are able to manufacture to your specific requirements with a range of dip moulding, injection moulding, extrusions, rotational moulding and overmoulding techniques.


Why you should choose us for your Plastic, Rubber & Metal Component needs
Fast packaging and shipping at all times
Bulk discounts available on all products
Free sampling available on most products
Excellent, friendly customer support on 01233 713581

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