Construction wood screw Koelner 6x30 mm, countersunk head, TX drive (model TS-6030)

Koelner construction wood screw TS-6030 is a 6x30 mm countersunk-head fastener with a TX (Torx) drive, designed for use in carpentry and general wood construction. The conical head seats flush with the work surface, and the Torx drive helps transfer higher torque with reduced cam‑out compared to Phillips or slotted drives. The screw’s thread geometry is intended to provide reliable engagement in soft and hardwoods for structural and non-structural joinery.

Advantages

The countersunk head ensures a flush or easily concealable finish when installed into wooden elements, while the TX drive provides stable bit engagement and fewer slipped drives during installation. Its 6 mm diameter and 30 mm length suit a wide range of assembly tasks, offering a balance of holding power and penetration without excessive splitting when predrilling is used as needed. The screw is appropriate for repetitive fastening where consistent torque and head seating are required.

Suitable for

• Structural and non-structural wood connections in construction
• Carpentry work such as framing, trim, and decking subcomponents
• Furniture assembly and general wood joinery
• Applications where a flush countersunk finish is needed

Key specifications

• Diameter: 6 mm
• Length: 30 mm
• Head type: Countersunk (conical) head for flush seating
• Drive type: TX (Torx) drive for improved bit engagement
• Intended material: Wood (softwood and hardwood)

How to use

Select a TX (Torx) bit that matches the screw drive and use a compatible driver or drill with adjustable torque. For best results, mark and clamp the workpieces before fastening. When joining hardwoods or where splitting is a concern, predrill a pilot hole of appropriate diameter and depth to guide the screw and reduce material stress. Insert the screw and drive it until the countersunk head sits flush with the surface or to the required depth without over‑driving, monitoring torque to avoid stripping the drive or damaging the material.

Usage recommendations

Use corrosion-appropriate fasteners and coatings if the application involves prolonged exposure to moisture or outdoor environments. Match pilot hole size to the wood species and screw diameter, and set driver torque to a level that secures the joint without crushing the wood or rounding the TX drive.