4.8mm x 80mm Countersunk Decking Screw - A2 Stainless Steel

4.8mm x 80mm Countersunk Decking Screw - A2 Stainless Steel

4.8mm x 80mm Countersunk Decking Screw - A2 Stainless Steel are high performance exterior timber fasteners designed specifically for decking applications. Manufactured from A2 Stainless Steel, these screws provide excellent corrosion resistance, long term durability and secure installation in softwood, hardwood and composite decking boards.

What are these screws?

Countersunk Decking Screws feature a reinforced countersunk head, coarse thread and sharp point engineered to deliver strong holding power in outdoor timber. Their square (Robinson) drive provides exceptional bit engagement, reducing cam out and enabling controlled, stable installation even in dense hardwood decking. The countersunk design ensures the head sits flush with the deck surface for a clean, smooth finish.

Key Features:

• Made from A2 Stainless Steel for superior outdoor corrosion resistance
• Countersunk head ensures a flush, safe and neat decking surface
• Robinson (Square) drive improves torque transfer and prevents bit slip
• Drive Size: SQ5
• Sharp point for fast, consistent timber penetration
• Coarse deep thread ensures strong grip in timber decking boards

Key Applications and Industries

Ideal for garden decking, boardwalks, exterior timber framing, landscaping structures, fencing and garden construction. Suitable for professional decking contractors and DIY installers working with hardwood, softwood or composite decking materials.

Technical Specifications

• Thread Size: 4.8mm
• Length: 80mm
• Head Diameter: 9.7mm
• Head Height: 3.5mm
• Drive Size: SQ5
• Drive: Robinson (Square)
• Standard: Decking
• Material: A2 Stainless Steel

These decking screws deliver a durable, high strength timber connection suitable for demanding outdoor conditions and long lifespan decking structures.

Benefits:

• Flush countersunk finish for clean deck surfaces
• Robinson square drive prevents slipping during installation
• Deep thread design maximises grip and holding power
• A2 Stainless Steel provides long term weather and corrosion resistance
• Suitable for hardwood, softwood and composite decking systems

Why Buy from Vital Parts?

Vital Parts supplies premium decking fasteners backed by strong availability, competitive pricing and expert support for contractors and trade professionals.

• Fast UK dispatch from extensive stock
• Expert technical guidance for decking applications
• Quality controlled exterior grade fasteners
• Reliable supply for ongoing project work