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- AnchorMark Decking Screw A4 316 S2 5.5x70 TTM\BiMetal x 100
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AnchorMark Decking Screw A4 316 S2 5.5x70 TTM\BiMetal x 100
AnchorMark Decking Screw A4 316 S2 – 5.5 x 70mm TTM/BiMetal (Box of 100)
Engineered for demanding environments, the AnchorMark A4 316 S2 Decking Screw (5.5 x 70mm) with TTM/BiMetal design is the premium choice for fastening timber decking to steel or aluminium substructures. Featuring a sharp self-drilling point and a dual-material BiMetal construction, these screws combine stainless corrosion resistance with steel-strength performance.
Crafted with an A4 (316) stainless steel body for maximum corrosion protection—especially in coastal or marine environments—paired with a hardened drill tip for effortless penetration into metal substrates. The S2 drive recess provides secure bit engagement and smooth installation with reduced cam-out.
Key Features:
Size: 5.5mm x 70mm
Material: A4 316 stainless steel body with hardened carbon steel drill tip
Type: TTM (Timber-to-Metal) / BiMetal construction
Drive: S2 – Torx/Star for precise, slip-free driving
Application: Ideal for decking timber to steel or aluminium subframes
Finish: Suitable for outdoor, coastal, and marine environments
Quantity: 100 screws per box
Applications:
Timber decking to steel frames
Boardwalks, jetties, or pergolas in marine zones
Long-term outdoor timber-to-metal fastening
Built for strength, speed, and corrosion resistance, these AnchorMark screws deliver unmatched performance where timber meets metal.
Details
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Diameter:5.5mm
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Length:70mm