Drill bit HSS Pro 12 mm, Irwin 10502351

Irwin HSS Pro 12 mm drill bit is a high-speed steel twist drill designed for general metal and wood drilling. The 12 mm diameter and conventional 118° point geometry provide precise hole making and good centring in a variety of materials. Manufactured for use in standard drill chucks, this HSS bit offers consistent cutting performance and effective chip evacuation for routine workshop, construction and maintenance tasks.

Advantages

The HSS material provides wear resistance and high cutting speeds compared with carbon steel bits, while the twist-flute design ensures reliable chip removal and reduced clogging. The 118° tip helps start holes accurately without unnecessary wandering, and the 12 mm diameter is a common size for through-holes, dowels and fasteners. The bit is compatible with corded and cordless drills that accept standard round or keyed chucks.

Suitable for

• Drilling holes in mild and alloy steels
• Creating holes in hardwoods and softwoods
• Routine workshop and maintenance drilling
• On-site construction tasks requiring standard-sized holes

Key specifications

• Material: High-speed steel (HSS)
• Tip geometry: 118° point for general-purpose drilling
• Flute type: Twist flute for efficient chip evacuation
• Diameter: 12 mm
• Shank type: Straight shank for standard drill chucks

How to use

Secure the drill bit in a properly rated chuck, ensuring the shank is fully inserted and tightened. Select an appropriate drilling speed—slower speeds for harder metals, higher speeds for wood—and apply steady axial pressure without forcing the bit. Use cutting fluid or lubricant when drilling steel to prolong bit life and improve chip flow. Withdraw the bit periodically for deep holes to clear chips and prevent overheating.

Usage recommendations

For best results when drilling metals, use cutting oil and keep speeds moderate to reduce heat buildup. When drilling wood, a higher speed and firm feed produce cleaner holes. Inspect the bit for wear before use and replace when cutting becomes dull or when significant chipping appears on the cutting edges.