Domed Nut & Bolt Caps

Domed nut and bolt caps, also known as plastic nut covers, plastic bolt caps, or bolt head covers, are essential protective components designed to safeguard exposed fasteners whilst providing a professional finish. These durable LDPE plastic caps fit securely over hexagonal nuts and bolt heads, offering comprehensive protection against moisture, dirt, acids, alkalis, and tampering. Widely used across UK industries including construction, playground equipment, automotive, manufacturing, and outdoor furniture applications, these versatile nut caps deliver both functional protection and aesthetic enhancement. The primary benefit of domed plastic nut covers lies in their ability to extend fastener lifespan whilst eliminating sharp edges that could cause injury, making them indispensable for public spaces and commercial installations. Available in various sizes from M4 to M30 and multiple colour options including black, white, grey, and custom RAL colours, these bolt head protectors accommodate virtually any hexagonal fastener whilst complementing existing design schemes.

Available Materials & Style Options:

• High-quality LDPE (Low Density Polyethylene) construction for durability and chemical resistance
• Standard colours: Black, White, Grey
• Custom RAL colour options available upon request and subject to MOQ
• Metric thread sizes from M4 to M30 to fit industry standard BSP and metric fasteners
• Domed profile design for enhanced aesthetic appeal and strength
• Push-fit installation requiring no additional tools or fasteners

Key Features & Benefits:

• Exceptional resistance to acids, alkalis, dirt, and moisture for long-lasting protection
• Withstands significant force thanks to robust LDPE material and structural design
• Eliminates sharp edges to prevent injury in public and commercial environments
• Simple push-fit installation over hexagonal nuts and bolt heads
• Professional appearance that enhances overall finish quality
• Cost-effective solution for fastener protection and tamper resistance
• UV-stable construction suitable for both indoor and outdoor applications
• Temperature resistance up to 70°C for demanding industrial environments

Common UK Use Cases:

• Playground equipment and children's play areas where safety regulations require covered fasteners to prevent injury and meet health and safety requirements
• Construction and building projects to protect exposed bolts on structural elements, cladding systems, and architectural features from weathering
• Automotive applications including vehicle assembly, maintenance workshops, and commercial fleet operations for fastener protection during transport and storage
• Outdoor furniture and street furniture installations by local councils to prevent corrosion and reduce maintenance whilst deterring vandalism
• Industrial machinery and equipment where fasteners require protection from harsh environmental conditions, chemicals, or operational debris

Related Vital Parts Products:

• Secure Nut & Bolt Caps - Two-part locking caps for enhanced tamper resistance in playground and public applications
• Threaded Protection Caps - Screw-on caps for protecting external threads during transit and storage
• PVC Stud Caps - Thread protection caps for covering exposed threaded studs and rods
• Thread Protection Nut Caps - Push-fit caps with clamping edges for nuts with exposed threads and washers

Call Vital Parts:

For quick quotes, same-day dispatch, custom sizes, or bulk discounts, call our sales line on 01233 713 581. Businesses can register for a Vital Parts Business Account to benefit from priority shipping, trade pricing, free product samples, credit accounts, and a dedicated account manager. Our technical team can provide expert guidance on selecting the correct nut cap size and material for your specific application requirements.