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3mm Hidden Fasteners (100 Bag)
by Dino Decking
£29.99
GTIN05061066120007
EAN5061066120007
MPN3HF
Prices updated 21 Jul 2026
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Dino Decking
BEST PRICEIn stockNew
£29.99
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Product Description
3mm Hidden Decking Clips Offering the most pristine finish with the smallest gaps between boards, our hidden 3mm composite decking fasteners closely align deck boards with no visible fixings. Securely attaching your composite decking to their composite decking frame, the fasteners maintain a consistent minimal gap between boards for the ultimate neat and professional-looking finish, and the narrow gap left by the fasteners also conceals the aluminium joist or composite joist from view while still allowing efficient drainage. Made of weather-resistant stainless steel to prevent rust, the decking clips are also black zinc coated for extra protection and reduced visibility and comes supplied with a durable weatherproof large head screw. Applying your 3mm Hidden Composite Decking Fasteners Fitting your 3mm decking clips has never been more simple. Each of our fasteners is supplied with a fully threaded, large-head self-drilling screw. Designed with a pointed tip to create its own pilot hole in the joist, the threaded screw eliminates the need for pre-drilled holes and effortlessly bores into the joist while tapping and fastening at the same time. The large head offers greater resistance to penetration into the joist, and the weatherproof stainless steel screw has a black zinc coating that coordinates with the fastener and provides additional durability. Looking for a different finish? Take a look at our 6mm hidden fasteners 3mm Composite Decking Fastener Benefits Flawless look: Achieve a smooth, uninterrupted deck surface with our 3mm composite decking fasteners. Easy installation: Designed to create consistent 3mm gaps between boards, making the installation process faster and more efficient. Built to last: Crafted for durability, our fasteners resist weathering to ensure long-term performance. Low-maintenance solution: Hidden fasteners eliminate the need for visible screws, streamlining installation while offering rust-resistant durability with minimal upkeep. 3mm Hidden Decking Fasteners FAQs Are composite decking clips universal? Not all composite decking clips are universal, as different brands and board designs may require specific clips. Some clips are designed to work with multiple decking types, while others are made for a particular system. Always check compatibility with your decking manufacturer to ensure a secure and proper fit. What clips do I need for composite decking? The type of clips you need depends on your decking brand and board profile. Typically, hidden fasteners are used for grooved boards, while starter fasteners secure the first and last boards. Always refer to the decking supplier’s guidelines to choose the right clips for your installation. Is a 3mm gap OK for decking? A 3mm sideways gap is suitable for composite decking, as it allows for natural expansion and contraction while ensuring proper drainage. Do you have to use clips for composite decking? Most composite decking requires clips to secure them without visible screws, especially grooved boards. However, some solid-edge boards can be installed with traditional screws or other fastening systems. Use the correct clips to ensure a cleaner finish and natural board movement. Not all composite decking clips are universal, as different brands and board designs may require specific clips. Some clips are designed to work with multiple decking types, while others are made for a particular system. Always check compatibility with your decking manufacturer to ensure a secure and proper fit. The type of clips you need depends on your decking brand and board profile. Typically, hidden fasteners are used for grooved boards, while starter fasteners secure the first and last boards. Always refer to the decking supplier’s guidelines to choose the right clips for your installation.A 3mm sideways gap is suitable for composite decking, as it allows for natural expansion and contraction while ensuring proper drainage.Most composite decking requires clips to secure them without visible screws, especially grooved boards. However, some solid-edge boards can be installed with traditional screws or other fastening systems. Use the correct clips to ensure a cleaner finish and natural board movement.
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