Holztechnic ICS countersunk timber screws combine a high‑performance geometry with durable A2 (AISI 305) stainless steel for dependable structural and exterior applications. The setback‑notch cutting tip, elongated cutter, asymmetric umbrella thread, and sharp under‑head ribs reduce splitting, lower driving torque, and deliver strong clamping of boards and connectors. The TX25 star recess ensures positive engagement and long bit life.
Use on softwood and many hardwoods, including outdoor and aggressive environments where corrosion resistance is critical. Suitable for timber densities:
- < 470 kg/m³ without pre‑drilling
- < 620 kg/m³ with pre‑drilling
Partial thread provides strong pull‑down for tight, squeak‑free connections in decking, cladding, and general carpentry.
✅ Key Features:
- TX25 star drive for high torque transfer and reduced cam‑out
- Countersunk head with under‑head ribs for clean, flush finishes
- Setback‑notch cutting tip and elongated cutter for fast start, less splitting
- Asymmetric “umbrella” thread for superior pull‑down and torsional strength
- A2 (AISI 305) stainless steel for excellent corrosion resistance
- Rated for outdoor use, Service Classes 1–3
🔧 Applications:
- Decking, cladding, façades, fencing
- Exterior carpentry and joinery in corrosive environments
- Board‑to‑timber and timber‑to‑timber fixings where strong clamp is needed
- Use with timber connectors and brackets requiring countersunk heads
📦 Why Choose Holztechnic ICS?
- Advanced geometry for secure screwing and cleaner finishes
- True A2 stainless construction for long life outdoors
- Reliable TX25 drive and partial thread for tight assemblies
