Drill bit GRAPHITE 57H271 for wood, spiral cylindrical, 4 mm

Spiral cylindrical drill bit GRAPHITE 57H271, 4 mm diameter, is engineered for drilling clean holes in wood. The twisted flute geometry removes chips efficiently while the cylindrical shank is compatible with standard chucks on handheld drills and drill presses. This 4 mm wood drill bit is intended for common woodworking operations such as creating pilot holes for screws, preparing holes for dowels, and other joinery tasks where a small-diameter, straight-hole solution is required.

Advantages

The spiral flute design provides effective chip evacuation, reducing clogging and heat build-up during continuous drilling. The cylindrical shank ensures secure mounting in standard chucks without the need for adapters. The 4 mm diameter offers precision for pilot holes and fine joinery, while the robust geometry maintains hole accuracy and concentricity in soft and hardwoods. The bit’s simple construction allows straightforward sharpening if needed, supporting extended tool life with proper maintenance.

Suitable for

• Drilling pilot holes for screws in furniture assembly
• Creating dowel or peg holes for joinery
• General woodworking tasks with handheld drills or drill presses
• Hobby and DIY carpentry projects requiring small-diameter holes

Key specifications

• Diameter: 4 mm
• Material: tool steel (standard for twist drill bits)
• Shank type: cylindrical (straight) shank for standard chucks
• Tip/Flute style: spiral (twisted) flute for chip evacuation
• Intended material: wood (softwood and hardwood)

How to use

Secure the drill bit in the chuck and tighten firmly to prevent slipping. Select an appropriate drilling speed for the wood type: higher speeds for softwoods and moderate speeds for hardwoods. Start drilling with steady pressure, ensuring the bit is perpendicular to the workpiece for a straight hole. Clear chips periodically by withdrawing the bit slightly while the drill is running or between passes. After drilling, inspect the hole and remove any remaining debris. For repeated or precision work, consider clamping the workpiece and using a depth stop to control hole depth.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and hearing protection. Match drill speed and feed to the wood species to avoid burning or bit wandering. For clean edges in finished pieces, back the workpiece on sacrificial board when the bit exits the material to reduce splintering.