Drill Bit GRAPHITE 57H254 spiral wood hex shank 12 mm

Spiral wood drill bit GRAPHITE 57H254 with a 12 mm cutting diameter and hexagonal shank is engineered for clean, efficient drilling in timber and wood-based materials. The spiral flute design evacuates chips as the bit advances, reducing friction and heat build-up while improving hole quality. The hex shank provides a secure fit in drill chucks and rapid-change adapters, making the bit suitable for both handheld drills and drill drivers used in woodworking, construction, and hobby projects.

Advantages

The 12 mm cutting diameter delivers consistent hole size for dowels, fittings, and fasteners while the spiral geometry minimizes clogging and tear-out on the exit side of the hole. The hex shank enhances torque transfer and prevents slipping in the chuck or quick-change holder. The bit is optimized for use in soft and hardwoods as well as common wood-based panels, providing predictable drilling performance and easier chip removal compared with straight-flute counterparts.

Suitable for

• Drilling clean holes for dowels and wood joinery
• Installing door hardware, hinges, and fasteners in timber
• On-site construction and renovation tasks involving solid wood or chipboard
• DIY furniture assembly and hobby woodworking projects

Key specifications

• Cutting diameter: 12 mm
• Tip and flute type: spiral flute for chip evacuation
• Shank type: hexagonal shank for secure grip
• Intended materials: timber and wood-based panels

How to use

Secure the drill bit in a compatible chuck or quick-change adapter, ensuring the hex shank seats fully to prevent slippage. Mark the drilling point and, if necessary, use a pilot center or clamp the workpiece to reduce movement. Start drilling at low speed to establish the hole, then increase speed as appropriate for the wood species and thickness. Apply steady, moderate pressure and allow the spiral flute to clear chips; withdraw occasionally for deep holes to remove accumulated debris and avoid overheating.

Usage recommendations

Use appropriate personal protective equipment, such as eye protection and hearing protection. For the best hole quality, select drilling speeds matched to the wood type (lower speeds for hardwoods), and keep the bit sharp and clean. When using on veneered or laminated panels, consider backing the workpiece to reduce splintering at the exit face.