Countersink drill bit Wera 844

Wera 844 countersink drill bit designed for precise countersinking work in combination with 1/4" screwdrivers and holders (DIN ISO 1173‑D 6.3). The tool features a 1/4" hexagonal shaft for secure power transfer and a geometry tuned for clean chip removal and low tilt risk. Made from a material with balanced elasticity to improve durability, this compact bit measures 5 mm in cutting diameter and is lightweight at 12 g.

Advantages

The hexagonal 1/4" shaft ensures good torque transmission to holders and screwdrivers. The finely tuned material elasticity increases service life while maintaining cutting performance. The cutting geometry promotes efficient chip evacuation and reduces the risk of tilting during countersinking. Compact dimensions make it convenient for use in confined spaces.

Suitable for

• Creating clean countersinks in metal, wood or plastics where a 5 mm cutter is applicable
• Use with 1/4" hex holders and screwdrivers (DIN ISO 1173‑D 6.3)
• Precise finishing work and preparation for countersunk screws

Key specifications

• Brand: Wera
• Model: 844
• MPN: 05104668001
• EAN: 4013288117595
• Cutting diameter: 5 mm
• Shank: 1/4" hexagon (DIN ISO 1173‑D 6.3)
• Weight: 12 g
• Dimensions (approx.): depth 7 mm × width 6 mm

How to use

Secure the Wera 844 countersink drill bit in a compatible 1/4" hex holder or screwdriver chuck. Align the bit with the workpiece at the required location and apply steady, controlled pressure while rotating the tool at an appropriate speed for the material. Withdraw regularly to clear chips if necessary. For best results, clamp or support the workpiece to avoid movement during countersinking.

Usage recommendations

Use appropriate safety equipment (eye protection and gloves) and select a speed suitable for the workpiece material. Inspect the bit before use for wear or damage and replace if cutting performance deteriorates.