You are using an outdated browser version not supported by this website.
Click here to upgrade your browser

Flat Countersunk Head Screws

Ideal for use on timber structures where a flat countersunk finish is required, the SPAX countersunk head screw is a modern, innovative screw for timber connections.

It is a partial thread screw for clamping timber components together, achieving better performance than traditional batten screws.

Key Features
  • Quick and easy installation compared with traditional wood screws, saving time and money
  • Higher load capacities due to coarse thread design and high strength steel
  • Four-cut point and serrated thread for reduced chance of splitting the timber and reduced screwing-in torque
  • Unique T-STAR plus recess for better torque transfer and reduced chance of stripping the head
  • Multi-head will self-countersink in timber or act as a brake in metal brackets
  • 8, 10 and 12mm diameters available in DELTA-SEAL coating for superior corrosion protection and resistance to timber treatments
  • 6 and 8mm diameters available in stainless steel
Scope of Use
  • CLT connections such as half-lap joints, floor to wall connections etc.
  • LVL connections
  • Replacing failed batten screws in decks and boardwalks
  • Any connection requiring a flush, countersink finish
Limitations on Use
  • DELTA-SEAL suitable for outdoor use with direct exposure to weather
  • Stainless steel A2 suitable for coastal areas
Statement of Building Code Compliance
  • SPAX products are manufactured in Germany and comply with the latest European requirements but have also been tested in local New Zealand timbers
  • Timber connection design can be performed according to either European Technical Assessments or to NZS 3603
Other Performance Attributes
  • Testing conducted on local timbers for timber connection design according to NZS 3603
Data Sheet: Countersunk Universal Screw
SPAX Screws for CLT Half-lap Wall Joints

SPAX is a German manufacturer of quality, innovative screws for timber connections such as framing, timber construction, decking, flooring, and cladding.

Product Enquiries

News from SPAX

New Time-Saving Bracket-Free Boundary Joist and Post-Fixing Solution
Get a free weekly digest of essential news

New and updated architectural products, design solutions, inspiration, technical advice and more when you sign up for EBOSS.