AnchorMark Decking Screw A4 316 S2 5.5x45 TTM\BiMetal x 250

Stock Code:
663660025
Price:
$243.38

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

  • Diameter:
    5.5mm
  • Length:
    45mm