Drill Bit Irwin spiral hex shank for wood 16 mm (model 10502758)

Irwin spiral hex shank drill bit for wood, 16 mm cutting diameter, is designed for efficient and precise drilling in timber and wooden workpieces. The spiral flute geometry promotes fast chip evacuation, reducing friction and preventing clogging while producing clean through-holes. The hexagonal shank ensures secure retention in chucks and compatibility with quick-change adapters and impact drivers that accept hex shanks.

Advantages

The spiral flute delivers rapid removal of wood waste and helps maintain a steady drilling rate, while the 16 mm cutting diameter provides a reliable hole size for dowels, fasteners, and pass-through fittings. The hex shank design increases grip in the drill chuck and allows use with quick-change systems, minimising slippage under load. The construction is aimed at consistent performance in a variety of timber densities and common woodworking situations.

Suitable for

• Drilling clean through-holes in softwood and hardwood
• Preparation of holes for dowels, bolts and connectors
• Use with hand drills, cordless drills and impact drivers with hex chuck
• Carpentry, furniture assembly and general woodworking tasks

Key specifications

• Cutting diameter: 16 mm
• Tip and flute: spiral flute for chip evacuation
• Shank type: hexagonal shank for secure grip and quick-change compatibility
• Primary material suitability: timber and general wooden workpieces

How to use

Mark the drilling position on the workpiece and secure the piece with clamps to prevent movement. Fit the hex shank into a compatible chuck or quick-change adapter and ensure it is tightened. Use steady, moderate feed pressure and an appropriate drilling speed for the timber density — lower speeds for hardwood and higher speeds for softwood — to avoid burning or tear-out. Withdraw the bit periodically on deep holes to clear chips if necessary and keep the flute clear for optimal performance.

Usage recommendations

Wear appropriate eye and hearing protection during use. For the best hole finish, support the exit side of the hole with sacrificial backing to reduce splintering. Inspect the bit for wear or damage before each use and replace when cutting becomes inefficient or the edges are dulled.