Auger drill bit DeWalt DT4606-QZ — 200 mm length, single piece

DeWalt DT4606-QZ is an auger drill bit 200 mm in length supplied as a single piece, engineered for drilling deep, clean holes in wood and similar materials. The bit combines a self-feed spur for quick penetration with a spiral groove profile that actively removes chips and maintains drilling progress. Peripheral cutting edges minimise splintering at the hole perimeter, making the bit suitable for handheld drills and drill stands used in woodworking, construction and installation tasks.

Advantages

The auger profile and LEWIS-style spiral groove ensure efficient chip transport and steady feed, reducing binding and overheating during extended drilling. A self-feed spur and peripheral cutters provide accurate hole positioning and clean edges with minimal spalling. The bit is manufactured from hardened alloy steel and features dual cutting edges to improve wear resistance and maintain cutting performance even when encountering embedded nails or abrasive inclusions.

Suitable for

• Drilling deep holes in soft and hardwoods for structural and carpentry work
• Creating clearance and dowel holes during furniture assembly and joinery
• On-site drilling with handheld drills and drill stands in construction and installation
• Pre-drilling for screws and bolts in timber framing and decking

Key specifications

• Overall length: 200 mm
• Single-piece auger bit design
• Self-feed spur for fast material penetration and accurate start
• LEWIS-style spiral groove for maximum chip transport and drilling progress
• Peripheral cutting edges for clean holes with minimal spalling
• Dual cutting edges to enhance durability against nails and abrasives
• Hardened alloy steel construction for extended bit life

How to use

Secure the auger bit in the drill chuck so the shank is fully seated and centered. Position the self-feed spur on the intended drilling point and start at low speed to ensure accurate engagement. Apply steady axial pressure while maintaining a consistent drill speed appropriate for the timber species; increase speed once the spur has established the entry. Withdraw periodically for long holes to clear chips if necessary. When drilling near embedded metal, proceed cautiously to avoid sudden bit deflection.

Usage recommendations

Use appropriate personal protective equipment, such as eye protection and gloves. Match drill speed to the wood type—lower speeds for hard timbers, higher speeds for softwoods—and avoid excessive axial force. For repeated deep drilling, clear chips regularly and allow the bit to cool. Inspect the bit for damage after contact with metal before continued use.