Drill bit for metal Smart HSS cylindrical 5.5 mm set of 10 (MPN 11-055)

Smart cylindrical HSS drill bit set for metal, 5.5 mm diameter, 10 pieces. These high-speed steel bits are designed for drilling precise 5.5 mm holes in steel and non-ferrous metals. The cylindrical shank is compatible with standard chucks on corded and cordless hand drills as well as drill presses, providing reliable concentricity for general metal fabrication, maintenance and repair tasks.

Advantages

The drill bits are made from high-speed steel for wear resistance and consistent cutting performance when drilling through mild steel, aluminum and other non-ferrous alloys. A uniform 5.5 mm cutting diameter across the set ensures repeatable hole sizing. The cylindrical shank allows easy clamping in standard chucks and supports use in both handheld and stationary drilling equipment. Supplied as a pack of ten, the set reduces downtime by providing ready replacements for routine workshop work.

Suitable for

• Drilling 5.5 mm holes in mild and alloy steels
• Creating holes in aluminium and other non-ferrous metals
• General metal fabrication and assembly tasks
• Maintenance, repair and replacement drilling operations

Key specifications

• Drill bit material: high-speed steel (HSS)
• Shank type: cylindrical
• Cutting diameter: 5.5 mm
• Quantity in set: 10 pieces
• Compatible with: standard drill chucks, hand drills and drill presses

How to use

Secure the chosen 5.5 mm HSS drill bit in the drill chuck and tighten firmly to prevent slipping. Select an appropriate drilling speed for the material—moderate speeds for steel and higher speeds for softer non-ferrous metals—while applying steady pressure. Use cutting fluid or lubricant when drilling steel to reduce heat and extend tool life. Drill through the workpiece with controlled feed, withdraw periodically to clear chips, and clamp the workpiece securely before starting to avoid movement.

Usage recommendations

For best results when drilling steel, apply a dedicated cutting fluid and use lower RPM with steady feed. For aluminium and other non-ferrous metals, higher speeds with light lubrication improve chip evacuation. Replace worn bits from the set promptly to maintain hole quality and avoid excessive force that can damage both bit and workpiece.