Wood Construction Screw Koelner/Rawlplug 8x200 mm washer head CS-8200

Wood Construction Screw Koelner/Rawlplug 8x200 mm washer head CS-8200 is a heavy-duty wood fastening screw designed for structural and general carpentry applications. The screw features an 8 mm diameter and 200 mm length that allow deep penetration into beams, posts and thick timber, while the washer head distributes load across the fastening surface to reduce wood compression and improve joint stability.

Advantages

The 8x200 mm construction screw provides high withdrawal resistance due to its substantial diameter and length, making it suitable for load-bearing connections. The integrated washer head increases contact area and minimizes surface damage, ensuring even pressure distribution. Thread design and hardened steel construction deliver reliable holding power and durability in common wood species used in construction. The screw is intended for applications where strong mechanical performance and a secure clamping effect are required.

Suitable for

• Fastening beams and joists in timber structures
• Joining posts and heavy timber elements
• Structural carpentry and general wood construction
• Repairing or reinforcing wooden frames and supports

Key specifications

• Diameter: 8 mm
• Length: 200 mm
• Head type: washer (bearing) head for improved load distribution
• Material: hardened steel suitable for mechanical fastening in wood
• Application: designed for deep penetration into solid timber and beam connections

How to use

Pre-drill a pilot hole appropriate to the screw diameter and the timber species to prevent splitting, particularly near edges or ends of boards. Position the screw so the washer head bears evenly against the wood surface and drive using an appropriate screwdriver, impact driver, or drill with torque control to avoid over-tightening. Ensure the screw is fully seated with the washer head flush to the surface without crushing the timber. For long-term structural fastening, verify alignment and spacing per project requirements.

Usage recommendations

Use corrosion-resistant or coated fasteners in exterior or humid environments; match pilot hole size to wood density and avoid excessive torque to preserve holding capacity. When installing in laminated or engineered timber, check manufacturer guidelines for permitted fastener types and embedment depths.