Decking Screw 4.2x41 mm C4 – TX20 for Wood Stud Outdoor

Decking screw 4.2 x 41 mm is designed for fastening decking boards to wooden substructures in outdoor environments. It ensures secure anchoring in wood while reducing the risk of surface damage and installation time.

The screw features a sharp cutting drill tip and specially adapted thread geometry for efficient penetration and grip in wood. Oblique and longitudinal flanks between the threads improve cutting performance and reduce resistance during installation. Grooves under the countersunk head allow clean embedding of the screw head approximately 2 mm into the decking surface.

Manufactured from case hardened steel and coated with Zincotech Au coating, the screw meets corrosivity class C4 requirements, making it suitable for outdoor use. The screw is installed using a TX20 bit. Recommended installation is with a power screwdriver equipped with a depth stop.

Technical Specifications:

• Drive type: TX20

• Head type: Countersunk

• Material: Case hardened steel

• Coating: Zincotech Au

• Corrosivity class: C4

• Recommended consumption: approx. 30 pcs/m²

Key Features:

• Sharp cutting drill tip

• Optimized thread for wood anchoring

• Grooves under head for clean countersinking

• Reduced torque during installation

• Designed to minimize cracking in wood

• Suitable for outdoor environments

Application & Usage

This decking screw is used for fastening decking boards to wooden studs and substructures in exterior applications.

Suitable for:

• Wooden terraces and decks

• Balconies

• Wooden fences

• Outdoor wooden constructions

The cutting drill tip and thread design reduce splitting risk in timber and allow faster installation with lower torque. For optimal results, use a power screwdriver with depth stop and countersink the head approximately 2 mm below the surface.

Commonly used by carpenters, deck installers and construction professionals working on outdoor timber structures.