SPAX: German-Engineered Stainless Steel Screws Since 1823
SPAX is manufactured by Altenloh, Brinck & Co in Ennepetal, Germany — the company that started industrial screw production in 1823. SPAX screws are engineered for timber construction, decking, and facade applications where corrosion resistance and holding strength are critical.
EcoGrit stocks SPAX stainless steel screws for the Australian market. All orders ship from our Melbourne warehouse.
Product Range
Decking Screws
A2 304 and A4 316 stainless steel decking screws with T-STAR plus drive. Available in standard, antique, and aluminium-compatible variants. Sizes from 5x40mm through 6x100mm. The CUT point reduces splitting and allows installation without pre-drilling in most hardwood species. Value packs available in 600-count boxes for large projects.
Facade Screws
A2 stainless steel facade screws with extra-small countersunk head for clean, concealed timber cladding fixings. Available in Standard (bright), BLAX (black), and Antique finishes. Sizes from 4x45mm through 5x100mm. Designed for rainscreen and ventilated facade systems compliant with NCC 2025 requirements.
Boardwalk Screws
A4 316 marine-grade stainless steel for coastal and high-corrosion environments. Heavy-duty 8mm diameter for boardwalk, jetty, and commercial decking applications where maximum pullout resistance is required.
Delta-Seal Timber to Steel
Bi-metal screws with Delta-Seal coating for fixing timber to steel substructure. Eliminates the need for pre-drilling steel battens. Available in 5x44mm and 5x71mm.
Why SPAX?
200 years of German screw manufacturing. T-STAR plus drive eliminates cam-out. CUT point for split-free installation in Australian hardwoods. Lifetime manufacturer warranty on all stainless steel fasteners.
Frequently Asked Questions
What is the difference between A2 304 and A4 316 stainless steel?
A2 304 is suitable for most outdoor applications. A4 316 contains molybdenum for superior resistance to salt spray and chlorides — recommended for coastal locations within 1km of the ocean, pool surrounds, and marine environments.
Do I need to pre-drill for SPAX screws?
The patented CUT point allows installation without pre-drilling in most softwoods and medium-density hardwoods. For dense Australian species like Ironbark, Spotted Gum, and Merbau, pre-drilling is recommended to prevent splitting and reduce driving torque.
What driver bit do SPAX screws use?
SPAX uses the T-STAR plus drive system. Decking and facade screws typically require T20 or T25 bits. A bit is included in every box.
Are SPAX screws NCC 2025 compliant?
Yes. SPAX facade screws are suitable for cavity batten systems required under NCC 2025 for Climate Zones 6-8. Verify screw length achieves minimum 30mm penetration into the stud after passing through board and batten.
What finishes are available for facade screws?
Standard (bright stainless), BLAX (black coated for dark cladding), and Antique (weathered patina for aged timber). All finishes are A2 304 stainless steel.