Spade drill bit Irwin 10502822 – spade bit Ø 38 mm for wood

Irwin 10502822 spade drill bit Ø 38 mm is a flat spade bit designed for fast, rough boring into wood and similar soft materials. The 38 mm diameter creates wide-through holes for carpentry, framing, electrical and plumbing installation work. The bit fits standard drill chucks and quick-change hex chucks, providing compatibility with hand drills and impact drivers for on-site drilling tasks.

Advantages

The spade bit features double cutting spurs that scribe the outside of the hole to reduce breakout at the exit side. A thicker cutting edge increases service life and resists wear during repeated use. The BLUE-GROOVE point and cutting edge promote faster chip removal to keep the hole cleaner while drilling. The shank is 10% larger for added durability, and the 1/4" quick-change shank allows fast bit changes and improved retention in quick-change chucks.

Suitable for

• Drilling through softwoods and hardwoods for carpentry and framing
• Running cable or conduit during electrical installations
• Making rough holes for plumbing and HVAC routing
• Quick on-site boring where speed and chip clearance are priorities

Key specifications

• Drill bit type: flat spade bit for wood
• Diameter: 38 mm
• Shank type: 1/4" quick-change hex shank
• Cutting features: double cutting spurs, thicker cutting edge, BLUE-GROOVE point for chip removal
• Construction: reinforced shank (approx. 10% larger for durability)

How to use

Secure the spade bit in a compatible drill or quick-change chuck, making sure the shank is fully seated and locked. Mark the drilling location and start at low speed to establish the hole, then increase speed while maintaining firm, steady pressure. Allow the drill and bit to remove chips through the BLUE-GROOVE channel; periodically withdraw the bit if chips build up. Support the workpiece where possible to reduce exit-side splintering and use the cutting spurs to minimize breakout when the bit exits the material.

Usage recommendations

Use the bit for rough boring tasks rather than finish work; for cleaner exit holes consider backing the workpiece or drilling from both sides. Avoid excessive side pressure and overheating—run the drill at appropriate speed for the timber type and clear chips regularly to prolong bit life.