Double countersunk head timber screws 4.0 x 40 mm, A2, TX20

Double countersunk head timber screws with partial thread are designed for reliable wood-to-wood fastening where a clean countersunk finish and secure holding are important. Made from A2 stainless steel, these screws feature a 4.0 mm diameter, 40 mm total length, 24 mm thread length and TX20 inner multi-tooth drive.

The double countersunk head helps the screw sit neatly in the material, while the partial thread supports strong clamping of timber parts. According to the manufacturer, the TX drive provides wobble-free screw driving, and predrilling is not needed in most cases, including many hardwoods, although testing is recommended before use.

These screws are intended for wood applications, with the manufacturer listing timber construction and solar among the areas of use. The product features include partial thread, 90° countersunk head, double countersunk head, TX drive and a standard tip.

Advantages:

• A2 stainless steel

• Double countersunk head

• Partial thread for clamping effect

• TX20 drive for stable screw driving

• In many cases no predrilling required

• ETA 11/0283 and UKTA 22/6473 listed by manufacturer

Applications:

• Wood fastening

• Timber construction

• Solar-related structures