Timco C2 Clamp-Fix Screws

About Timco C2 Clamp-Fix Screws

Timco C2 Clamp-Fix Screws are purpose-designed timber-to-timber fixing screws that provide a strong clamping action during installation. Unlike standard woodscrews, Clamp-Fix screws are engineered to prevent timber “jacking”, helping draw materials together tightly for a secure, flush finish.

This makes them particularly well suited to applications such as framing, decking substructures, fencing and general joinery, where clean alignment and joint stability are critical.

Designed for Secure Timber-to-Timber Fixing

C2 Clamp-Fix Screws are commonly used where two pieces of timber must be pulled together firmly without gaps, movement or surface lift, including:

• Timber framing and carcassing
• Decking subframes and joists
• Fencing and gate construction
• Studwork and structural timber joints
• Joinery and general construction

They are intended specifically for timber-to-timber applications, rather than general fixing into boards or masonry.

Key Design Features

C2 Clamp-Fix Screws incorporate advanced features to improve clamping performance, control and consistency on site:

• Patented Twin-Cut point for rapid pick-up, faster insertion and reduced timber splitting
• Precision TX drive recess for positive drive engagement and reduced cam-out
• Double countersunk head with ribs to improve countersinking and deliver a clean, flush finish
• Dual-angle thread for strong pull-out resistance and secure holding power
• High-molecular polymer lubricant to reduce insertion torque by up to 52% and improve corrosion resistance

Clamp-Fix screws are partially threaded from 40mm, allowing the unthreaded shank to pull the top timber tight against the second piece, creating a true clamping effect.

Choosing the Right Clamp-Fix Screw Size

Selecting the correct screw length is essential for achieving proper clamping performance.

• For thinner timber sections, choose shorter lengths to avoid breakthrough and over-penetration
• For structural joints and thicker timbers, longer screws provide improved pull-out resistance and joint strength

As a general guide, the screw length should be matched to the combined thickness of the timbers being joined, ensuring sufficient penetration into the second piece to achieve a secure clamp without forcing the materials apart.

Where Clamp-Fix Fits in the C2 Range

C2 Clamp-Fix Screws sit alongside C2 Strong-Fix as a specialist timber fixing solution. While Strong-Fix is designed for general structural timber applications, Clamp-Fix is the preferred option where tight draw-up and joint control are the priority.

If preventing timber jacking and achieving a clean, closed joint is critical, Clamp-Fix offers a reliable and purpose-built solution.

Trusted Trade Fixings

Our C2 Clamp-Fix Screws are supplied by Timco and selected for professional use where consistency, control and long-term fixing strength matter.

Browse our range to find the right Clamp-Fix screw size for your timber application.