Drill Bit Irwin hex shank spade 8 mm model 10502831 for wood

Irwin 8 mm spade drill bit with hex shank (model 10502831) is designed to drill clean holes through wood quickly. The flat spade tip and cutting edges remove material efficiently to form an 8 mm diameter hole, while the hex shank secures the bit in standard drill chucks and quick-change holders. This bit fits hand drills and drill drivers used in carpentry, electrical and plumbing installations, and general woodwork where fast, straight holes are needed.

Advantages

The spade tip design delivers fast material removal and straight hole formation in soft and medium-density wood. The 8 mm diameter provides a common hole size for pilot holes, conduit and cable passages. The hex shank ensures positive grip and reduces slippage in keyed and keyless chucks and quick-change adaptors, enabling rapid bit changes on site. Hardened cutting edges maintain sharpness for consistent performance in repeated use.

Suitable for

• Drilling through timber, plywood and particleboard
• Creating pilot holes for screws and bolts
• Making openings for electrical cables and conduit
• Plumbing and HVAC rough-in holes in wooden structures
• Quick hole work with cordless drill drivers and corded drills

Key specifications

• Diameter: 8 mm
• Tip type: flat spade (paddle) with cutting edges
• Shank type: hexagonal shank for secure grip
• Intended material: wood and wood-based panels
• Compatibility: hand drills, drill drivers and quick-change chucks

How to use

Install the Irwin 8 mm spade bit into the drill chuck or quick-change holder and tighten securely. Position the drill perpendicular to the workpiece to maintain a straight hole, start drilling at low speed to establish the cut, then increase speed as the bit engages the wood. Apply steady, moderate pressure; allow the bit to remove chips without forcing it. Withdraw occasionally to clear chips when drilling deep holes, and support the workpiece to prevent splintering at the exit side.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and hearing protection. For cleaner exit holes, back the wood with scrap material or tape the exit side. Keep the bit sharp and clean of resin; replace the bit if cutting performance degrades. Match drill speed and feed rate to the wood type—lower speeds for hardwoods and higher speeds for softwoods.