Drill bit GRAPHITE spiral wood hex shank 22 mm (57H368)

Spiral wood drill bit by GRAPHITE with a 22 mm cutting diameter and a hexagonal shank, model 57H368, is designed for drilling clean, accurate holes in solid wood and wood-based materials. The spiral flute geometry efficiently evacuates chips to reduce clogging, while the reinforced cutting tip provides steady penetration and controlled cutting action. The hex shank ensures a secure grip in standard chucks and quick-change adapters, making the bit suitable for both handheld and bench-mounted drills.

Advantages

The spiral flute removes chips rapidly, reducing friction and overheating during prolonged drilling. A precisely ground cutting edge delivers smooth hole walls and minimizes tear-out on the exit side. The hexagonal shank improves torque transfer and prevents slipping in the chuck, enabling faster bit changes and stable operation under load. The bit is compatible with common woodworking drills and accessories.

Suitable for

• Drilling holes in soft and hard woods
• Work with plywood, MDF and particleboard
• Carpentry, joinery and cabinetmaking tasks
• DIY projects and furniture assembly

Key specifications

• Cutting diameter: 22 mm
• Shank type: hexagonal shank for secure chuck grip
• Flute type: spiral flute for efficient chip removal
• Material: high-strength tool steel (heat-treated)
• Intended materials: solid wood and wood-based panels

How to use

Install the hex shank securely in the drill chuck or quick-change adapter, ensuring firm clamping to prevent wobble. Begin drilling at low speed to establish the hole and then increase speed as needed, applying steady, even pressure. Allow the spiral flute to remove chips; withdraw the bit periodically for deep holes to clear debris and avoid overheating. For cleaner exit holes, back up the workpiece with a sacrificial board or use slower feed near the exit side.

Usage recommendations

Use appropriate drill speeds for the wood type: lower speeds for hardwoods and higher speeds for softwoods. Wear eye protection and follow standard safety precautions. Keep the bit sharp and free of resin build-up; re-sharpen or replace when cutting performance declines.