Drill bit Irwin spiral hex shank 18 mm model 10502761 for wood

Irwin spiral wood drill bit with hex shank, 18 mm diameter, designed for drilling clean, accurate holes in timber and wooden workpieces. The spiral flute geometry evacuates chips efficiently to reduce clogging and improve drilling speed, while the hexagonal shank ensures secure grip in standard chucks and quick-change adapters. This drill bit is intended for use with handheld drills and drill drivers in carpentry and general woodworking tasks where straight, well-formed holes are required.

Advantages

The spiral flute design promotes fast chip removal and consistent cutting action, helping to maintain hole quality in soft and hardwoods. The hex shank provides positive drive engagement and reduces slippage in chucks and quick-change systems. The 18 mm diameter offers a balance between material removal and control for common timber drilling tasks, and the bit's geometry supports accurate centring and stable penetration.

Suitable for

• Drilling through softwoods and hardwoods
• Installing dowels and wooden connectors
• Creating holes for door hardware and fittings
• Carpentry, joinery and general woodworking projects

Key specifications

• Material application: wood (timber, laminated boards, solid wood)
• Tip and flute: spiral flute for chip evacuation
• Shank type: hexagonal shank for secure drive
• Diameter: 18 mm
• Compatibility: handheld drills and drill drivers with chucks or quick-change adapters that accept hex shanks

How to use

Secure the hex shank in the drill chuck or quick-change adapter ensuring a tight fit before starting. Mark the drilling point and, if necessary, use a centre punch or pilot mark to improve accuracy. Start drilling at low speed to establish the hole, then increase speed as the bit cuts and chips are evacuated along the spiral flute. Apply steady, even pressure; avoid excessive force that can cause bit wandering or splintering. Clear accumulated chips periodically on deep holes to maintain cutting efficiency.

Usage recommendations

Use appropriate personal protective equipment including eye protection and hearing protection when operating power tools. For best results in hardwoods, use a slower drilling speed and moderate feed pressure. When precision depth is required, use a depth stop or tape on the bit to control penetration. Inspect the bit before use and replace if worn, damaged or blunt to maintain hole quality and safe operation.