Our 3mm Premium Hidden Fasteners are perfectly designed to fit between our Premium Composite Decking boards. Providing a seamless and uniformed finish with a small 3mm expansion gap to allow for any potential expansion of the boards. Description Bag of 100 hidden 3mm Composite Decking Fasteners Ensures uniform 3mm gaps between boards No visible fasteners – seamless deck finish Large head self-drilling screw supplied with each fastener Weatherproof, rust-resistant stainless steel with black zinc coating Stainless steel screws covered in black zinc coating with SQ1 square screw heads for superior fixing
