A Specialist Manufacturer of Nut & Bolt Cover Caps
Bluemay nut and bolt protecting caps are designed to neatly encapsulate and safeguard metal hexagon nuts or bolt heads, providing both protection and an improved finished appearance.
Manufactured from durable engineering-grade plastics, these caps help shield fixings from moisture, dirt and environmental exposure, reducing the risk of corrosion and extending the service life of the assembly. They also protect surrounding surfaces and personnel by covering sharp edges, helping to improve safety in operational environments.
In addition to their protective function, our caps deliver a clean, hygienic and professional finish. They are easy to install, lightweight and available in a variety of sizes and colours to suit different applications and identification requirements. Ideal for use in industrial, commercial and hygienic settings, Bluemay nut and bolt protecting caps combine practical protection with a high-quality aesthetic result.
What Are Plastic Nut and Bolt Protective Cover Caps?
Plastic nut and bolt cover caps are small, often overlooked components that fit snugly over nuts and bolts. These caps are typically made from a durable plastic materials like polyethylene. They serve as a protective barrier, shielding nuts and bolts from environmental damage, corrosion, and physical wear and tear.
Nut and bolt protective cover caps available in almost any colour
Bluemay nut and bolt protective cover caps are available as standard in white, black or grey but can be manufactured to match almost any colour of your choice. Standard thermoplastic materials are LDPE (low density polyethylene).
Our Stock Plastic Nut and Bolt Cover Caps:
| Size | A | B | C | D |
|---|---|---|---|---|
| M4 | 8.3 | 3.5 | 9 | 7 |
| M5 | 9.5 | 5 | 10.9 | 8 |
| M6 | 13 | 6 | 12.9 | 10 |
| M8 | 15 | 7.5 | 16.8 | 13 |
| M10 | 19.5 | 9 | 21.3 | 17 |
| M12 | 21.5 | 11 | 23.6 | 19 |
| M16 | 27 | 14 | 29.8 | 24 |
| M20 | 33.2 | 17 | 37.4 | 30 |
Material: LDPE (low density polyethylene) | Dimensions shown in mm
Key Product Features: White, grey, and black in stock. Other colours available on request.
Frequently Asked Questions (FAQs) About Plastic Nut and Bolt Protective Cover Caps
Plastic nut and bolt protective cover caps are small covers made from durable plastic materials such as polyethylene, polypropylene, or nylon. They fit over nuts and bolts to protect them from environmental damage, corrosion, and physical wear and tear.
Using plastic protective cover caps offers several benefits, including protection against corrosion, enhanced safety by covering sharp edges, improved aesthetics by concealing fasteners, vibration dampening, and cost-effective long-term protection for your fasteners.
These nut and bolt caps are commonly used in the automotive industry, construction, electronics, marine applications, and industrial machinery. They are versatile and can be applied in any setting where fasteners need protection.
Plastic nut and bolt caps act as a barrier between the metal fasteners and environmental elements such as moisture, chemicals, and salts that cause corrosion. By preventing direct exposure, they significantly extend the life of the nuts and bolts.
Yes, plastic protective caps come in various sizes and styles to fit different types of nuts and bolts. At Bluemay, we offer a wide range of options, and we can also provide custom solutions to meet specific requirements.
The suitability of plastic caps for high-temperature environments depends on the type of plastic used. Materials like nylon can withstand higher temperatures compared to polyethylene or polypropylene. It's important to choose the right material for your specific application.
Yes, plastic caps can help dampen vibrations and reduce noise in applications where machinery is subject to constant movement and vibrations, such as in automotive or industrial settings.
Installing plastic protective caps is straightforward. Simply push the cap over the exposed nut or bolt until it fits snugly. No special tools are required, making installation quick and easy.
While plastic caps are designed for durability, their ability to be reused depends on the specific application and the environment in which they are used. In some cases, they can be removed and reapplied, but it's important to inspect them for any damage before reuse.
Bluemay offers high-quality plastic protective caps made from durable materials. We provide a wide range of sizes and styles to suit most hex nuts and bolts, as well as custom solutions. Our experienced team offers expert guidance and exceptional customer service to ensure you get the best protection for your fasteners.
You can contact our sales team, Julietta, Amanda, and Teresa, by email at or give us a call on +44 (0)1380 821821 to discuss your needs. We will help you choose the right caps for your application and assist you with placing an order.
Our stock range of plastic fasteners are available for immediate dispatch!
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Call us: +44 (0)1380 821821
