Drill bit Irwin auger hex shank 25 mm model 1922003 for wood

Irwin auger drill bit with 25 mm cutting diameter and hex shank, model 1922003, is designed for drilling clean, deep holes in wood. The spiral auger geometry extracts chips efficiently, while the threaded tip initiates cutting and pulls the bit forward for steady progress. The hex shank ensures secure engagement with chucks and quick-change adapters, reducing slippage during heavy-duty and repetitive drilling tasks. This drill bit is intended for use in softwoods and hardwoods where accurate, fast wood boring is required.

Advantages

The auger design offers smooth chip evacuation, minimizing clogging and heat buildup during prolonged drilling. The 25 mm cutting diameter produces precise hole sizes suitable for dowels, cables or pipe passages. The threaded lead screw provides self-feeding action that reduces the need for forward pressure from the operator. The hex shank improves torque transfer and prevents rotation in quick-change systems, making the bit compatible with cordless drills, impact drivers with adapters, and drill chucks that accept hex shanks.

Suitable for (tasks / use cases)

• Drilling deep, clean holes for wooden dowels and joints
• Creating passages for cables and small pipes through timber
• Carpentry and joinery tasks requiring precise bore diameters
• General woodworking and renovation where fast wood boring is needed

Key specifications

• Cutting diameter: 25 mm
• Tip type: threaded lead screw for self-feeding
• Flute geometry: spiral auger for efficient chip removal
• Shank type: hex shank for secure chuck and quick-change adapter fit
• Material: high-strength tool steel (factory heat-treated for durability)

How to use

Install the auger bit into a compatible drill or quick-change adapter ensuring the hex shank is fully seated. Start drilling at moderate speed to allow the threaded tip to engage the wood, then maintain steady speed and light, consistent pressure as the bit pulls itself into the material. Withdraw the bit periodically on deep holes to clear chips if necessary and avoid overheating. Use appropriate personal protective equipment, clamp the workpiece securely, and ensure drill alignment is perpendicular to the surface for accurate bores.

Usage recommendations

For best results use the bit on dry, clean wood and select drill speeds suited to the timber density: lower speeds for hardwoods, higher speeds for softwoods. Keep the threaded tip sharp and clear of resin by cleaning after use. When drilling near edges, support the workpiece to reduce splintering and consider backing material to improve hole finish.