Drill Bit Irwin 16 mm Hex Shank Auger for Wood, model 1921999

Irwin 16 mm Hex Shank Auger for Wood (model 1921999) is a wood-boring drill bit designed to produce clean, deep holes in soft and hard wood. The bit features a screw point that pulls the cutter into the material and a spiral flute geometry that carries chips out of the hole for efficient cutting and reduced clogging. The hex shank provides a positive grip in chucks and quick-change adapters, improving stability and torque transfer during drilling.

Advantages

The auger design with a self-feeding screw point permits faster penetration with less applied force, while the spiral flutes evacuate chips to maintain a clear cutting path. The 16 mm diameter yields consistent hole size suitable for dowels, bolts, and rough carpentry fastenings. A hex shank ensures secure, slip-resistant engagement in impact drivers, drill drivers, and quick-change tool holders. The construction aims to balance cutting speed, chip removal and hole cleanliness for woodworking tasks.

Suitable for

• Carpentry and timber framing
• Door and lock installation
• Drilling holes for dowels and bolts in furniture assembly
• General woodworking and site carpentry

Key specifications

• Diameter: 16 mm
• Type: Auger bit for wood
• Shank: Hex shank for secure chuck or quick-change adapter fit
• Tip: Self-feeding screw point for fast penetration
• Flute: Spiral flute for efficient chip removal
• Material: Heat-treated tool steel (typical for this bit type)

How to use

Secure the bit in a compatible chuck or quick-change adapter, ensuring the hex shank seats fully to prevent slippage. Position the screw point on the marked drilling location and start at low speed to engage the point, then increase speed and apply steady, moderate pressure to let the screw point feed the bit into the wood. Maintain alignment to keep holes straight and clear chips from the hole intermittently if drilling deep. Withdraw the bit while running briefly to clear remaining chips if necessary.

Usage recommendations

Use appropriate pilot marks and clamps to stabilize workpieces. For harder woods, drill at controlled speed and clear chips frequently to avoid overheating and binding. Wear eye protection and follow standard workshop safety procedures when operating power tools.