Anchormark: Australian Stainless Steel Screws for Decking and Cladding
Anchormark is an Australian company specialising in professional-grade stainless steel screws for timber decking, cladding, fencing, and structural applications. Their S2 range is engineered for Australian hardwoods and conditions, with anti-friction coatings that reduce driving torque and minimise timber splitting.
EcoGrit is an authorised Anchormark stockist. All products ship from our Melbourne warehouse.
Product Range
S2 Decking Screws
Available in A2 304 and A4 316 stainless steel with pyramid-shaped drilling tips that reduce splitting. Standard, BLACK, and VINTAGE finishes. Box sizes from 100 to 1000 units. The S2 anti-friction coating allows up to 30% faster driving than uncoated screws.
TTM Timber-to-Metal Screws
Bi-metal decking screws for fixing timber boards to steel substructure without pre-drilling. A4 316 grade. Available with colour-matched heads in Aged Wood, Antique, Beech, Black, Blackbutt, Ipe, Silver Grey, and Teak finishes.
S2 Cladding Screws
A4 316 stainless steel with extra-small head for concealed timber cladding fixings. Standard, BLACK, and VINTAGE finishes. Lengths from 37mm to 80mm for various cladding thicknesses and batten depths.
Panel Screws
A4 316 stainless steel panel screws for timber screening, privacy panels, and decorative elements. Smaller 3.5mm diameter for thinner timber sections.
H/S Hidden System Screws
Concealed fixing system for a fastener-free deck surface. Available in A2 304 and A4 316 grades with Standard and VINTAGE finishes.
Fencing Screws
DS (double seal) fencing screws in Silver, Black, and Brown finishes for fence palings, rails, and structural posts.
Accessories
Drive bits (TX10 through TX40), countersink tools, and installation clips for the complete Anchormark system.
Why Anchormark?
Australian-designed for Australian conditions. S2 anti-friction coating for faster driving and less splitting. Wide range of colour-matched heads to blend with popular timber species. Both A2 and A4 grades for inland and coastal applications.
Frequently Asked Questions
What is the S2 coating?
S2 is Anchormark's proprietary anti-friction coating applied to the screw thread. It reduces driving torque by up to 30%, which means less splitting in dense Australian hardwoods and faster installation with less effort on your impact driver.
What is the difference between Standard, BLACK, and VINTAGE finishes?
Standard is the natural bright stainless finish. BLACK is a coated dark finish for dark timber species. VINTAGE has a weathered patina that blends with aged or greyed timber. All three are available in A4 316 stainless.
What are TTM screws for?
TTM (Timber-to-Metal) screws are bi-metal fasteners designed to fix timber decking boards directly to steel joists or battens. They have a self-drilling tip that penetrates steel without pre-drilling, and colour-matched timber heads for a clean finish.
Which grade do I need — A2 304 or A4 316?
A2 304 is suitable for most residential and commercial outdoor applications. Choose A4 316 for coastal properties within 1km of salt water, pool surrounds, or any high-chloride environment.
What driver bits do Anchormark screws use?
Anchormark uses Torx drive: TX10 for 3.5mm screws, TX15 for 4-4.5mm, TX20 for 5-5.5mm S2 screws, TX30 for 6mm Ruspert screws, TX40 for 8mm screws, and SIT20/SIT30 for TTM screws.