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- AnchorMark Decking Screw A4 316 S2 5.5x45 TTM\BiMetal x 250
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AnchorMark Decking Screw A4 316 S2 5.5x45 TTM\BiMetal x 250
AnchorMark Decking Screw A4 316 S2 – 5.5 x 45mm TTM/BiMetal (Box of 250)
The AnchorMark 5.5 x 45mm A4 316 S2 Decking Screw with TTM/BiMetal design is a premium fastener purpose-built for securing timber to steel or aluminium subframes—ideal for coastal, marine, and high-exposure environments. This screw features a robust BiMetal construction: an A4 (316) stainless steel body for superior corrosion resistance, paired with a hardened carbon steel drill tip for easy, precise penetration into metal without pre-drilling.
With a shorter 45mm length, it's perfectly suited for hardwood decking boards and applications with limited clearance. The S2 Torx drive ensures secure engagement, fast installation, and reduced cam-out—even in dense timber.
Key Features:
Size: 5.5mm x 45mm
Material: A4 316 stainless steel body with hardened drill point
Drive Type: S2 – Torx/Star drive
Type: TTM (Timber-to-Metal) / BiMetal self-drilling screw
Finish: Corrosion-resistant for marine and outdoor use
Quantity: 250 screws per box
Recommended For:
Timber decking on steel or aluminium joists
Coastal jetties, pergolas, and outdoor structures
Smaller boards or compact decking systems
Reliable, fast-driving, and corrosion-proof, these screws are trusted by professionals for their performance where timber meets metal.
Details
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Diameter:5.5mm
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Length:45mm