Drill bit Irwin 10502227 twist drill bit Ø9 mm, 1 pc

Irwin 10502227 is a single twist drill bit with a 9 mm diameter designed for general-purpose drilling. The solid shank and spiral flute geometry are engineered to evacuate chips efficiently and maintain stable cutting when used in hand-held or machine drills. The bit’s dimensions and construction make it suitable for repair, construction and mounting tasks across a range of common workshop materials.

Advantages

The twist geometry ensures reliable chip removal and consistent hole quality while the robust shank provides secure grip in chucks or quick-change holders. Performance is optimised for sheet metal and other thin materials but the design also gives acceptable results in wood and plastic. The single-piece construction reduces the risk of breakage under normal working conditions and the 9 mm diameter meets common fastening and clearance needs.

Suitable for

• Drilling holes in sheet metal and thin metal plates
• Creating clearance or pilot holes in wood and plastic
• General repair and assembly tasks in workshops and construction sites
• Mounting brackets, fasteners and fittings requiring a 9 mm hole

Key specifications

• Drill type: twist drill
• Nominal diameter: 9 mm
• Overall length: 125 mm
• Shank style: triangle shank for positive drive
• Recommended materials: metal, sheet metal, stainless steel (use coolant), wood, plastic
• Package quantity: 1 piece

How to use

Secure the drill bit in a compatible drill chuck or quick-change holder, ensuring proper alignment and firm clamping of the triangle shank. Choose a speed appropriate for the material: higher speeds for wood and plastic, moderate speeds for sheet metal, and lower speeds for stainless steel. Apply steady, even feed pressure and allow the bit to clear chips; withdraw occasionally if drilling deep holes. When drilling stainless steel or other hard alloys, use a suitable coolant or cutting fluid to reduce heat and prolong bit life.

Usage recommendations

For best results in sheet metal, use a backing support to prevent deformation and select a drill speed that balances cutting efficiency with chip control. When drilling stainless steel, use lubricant and reduced speed; consider dedicated cobalt HSS drills for frequent stainless work. Inspect the bit for wear before use and replace if the cutting edges become dull or damaged.