Wood construction screw Koelner/Rawlplug 8x260 mm washer head CS-8260

Wood construction screw Koelner/Rawlplug 8x260 mm washer head CS-8260 is a heavy-duty fastener designed for connecting timber elements in structural and general carpentry. The screw combines a long threaded shank with a washer-style head to provide broad bearing surface and secure clamping of wooden components. It suits applications where high holding strength and reliable joint integrity are required, and it is compatible with power drivers; pre-drilling is recommended for dense or split-prone timber.

Advantages

This 8x260 mm construction screw offers deep thread engagement for strong pull-out resistance and a washer head that distributes load to reduce localized compression of the wood. The screw’s length allows it to penetrate multiple layers or thick sections of timber, making it usable for beams and heavy framing. Its geometry is suitable for use with power drivers, speeding up installation while maintaining consistent torque and seating.

Suitable for

• Structural timber connections such as beams and posts
• Decking and outdoor timber platforms (with appropriate corrosion protection)
• General carpentry and heavy joinery
• Fixing ledger boards, plates and substructures
• Applications requiring strong clamping and load distribution

Key specifications

• Diameter: 8 mm
• Length: 260 mm
• Head type: washer (broad bearing) head
• Thread: full/long thread for deep engagement (suitable for wood-to-wood connections)
• Drive compatibility: designed for use with compatible power drivers

How to use

Mark and align timber components, then clamp or secure them to prevent movement during fastening. For dense hardwoods or close-to-edge placement, pre-drill a pilot hole of appropriate diameter and depth to avoid splitting. Position the screw and drive it with a power driver or impact driver, applying steady pressure until the washer head sits flush against the wood surface. Ensure correct embedment without over-torquing to preserve the wood’s integrity and the screw’s holding performance.

Usage recommendations

Use corrosion-resistant variants or additional protective measures for outdoor or humid environments. Select pilot hole size based on timber species and thickness, and follow recommended torque settings for your driver to achieve secure joints without damaging the material.