Drill bit set Smart365 HSS-Co Step-Tec 1.5 mm, 10 pieces

Smart365 HSS-Co Step-Tec 1.5 mm drill bit set consists of ten precision bits engineered for creating small, accurate holes in metal. Each bit is made from cobalt-alloyed high-speed steel (HSS-Co) to provide increased hardness and improved wear resistance compared with standard HSS. The Step-Tec geometry supports efficient chip evacuation and stable cutting action, reducing clogging and promoting consistent hole quality in both ferrous and non-ferrous metals. This compact set is intended for workshop and industrial environments where repeatable precision for small-diameter drilling is required.

Advantages

The cobalt-alloyed HSS construction increases heat resistance and extends tool life under demanding metal-drilling conditions. Step-Tec geometry improves chip removal and reduces the likelihood of burring or chatter when drilling small-diameter holes. The 1.5 mm diameter ensures fine, precise holes for tasks that require tight tolerances. Supplied as a set of ten, the bits offer quick replacement and continuity of work without frequent regrinding.

Suitable for

• Drilling small-diameter holes in steel and stainless steel
• Drilling in non-ferrous metals such as aluminium, brass, and copper
• Workshop and industrial production where precision small holes are needed
• Toolmaking, electronics enclosures, and mechanical assemblies with tight fits

Key specifications

• Material: cobalt-alloyed high-speed steel (HSS-Co)
• Geometry: Step-Tec for improved chip evacuation
• Diameter: 1.5 mm
• Quantity: 10 drill bits per set
• Intended materials: ferrous and non-ferrous metals

How to use

Select an appropriate drill speed and feed for 1.5 mm HSS-Co cutting tools and the specific material you are working with; lower speeds and lighter feed are generally recommended for small diameters in hard metals. Secure the workpiece firmly in a vice or fixture and centre-punch the drilling location to prevent wandering. Use cutting fluid or lubricant for steel and stainless steel to reduce heat and improve chip evacuation. Replace bits from the set as they show wear; inspect cutting edges before use to ensure accuracy.

Usage recommendations

For best results, use a drill press or guided drilling system where possible to maintain perpendicularity and repeatability. Maintain proper cooling and occasional chip clearing to extend bit life. Store the bits in a dry place and handle them carefully to avoid edge damage from impact.