UC Yellow Zinc Hardened Self-Tapping Screw with Countersunk Head and Koelner Threads

This hardened self-tapping screw with a countersunk head and threaded groove is designed for securely fastening components to wood and wood-based materials. The special thread design ensures easy screw-in and a strong connection in various types of wood.

The optimized grooved head shape facilitates precise installation without splitting the material, even near the edges. The double-conical head shape increases torque during tightening and helps prevent the fastener from self-loosening.

The primary purpose of the thread cut is to provide more aggressive tightening in hard wood.

Applications: for fastening floorboards, doors, metal components, small mounting parts, and finishing work. Suitable for use in wood and particleboard.

Material: steel.

Coating: yellow zinc protects against corrosion when the fasteners are intended for use in harsh environments.