The SAMAC Performance Exterior Countersunk Black Screws 4mm are high-quality, trade-grade fixings designed for external timber applications where durability, corrosion resistance, and a neat flush finish are required. Finished in black , these screws are ideal for visible fixings, blending seamlessly with dark or coated timber materials. With a 4mm diameter , these screws are well suited to lighter exterior tasks such as cladding, fencing panels, garden structures, sheds, outdoor furniture, and general exterior joinery. The countersunk head design
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