Drill bit Smart HSS for metal 4.0 mm, set of 10

Smart HSS drill bits, 4.0 mm diameter, set of 10 pieces, designed for drilling holes in steel and other non-hardened metals. Made from high-speed steel (HSS), these drill bits are suitable for use with handheld and bench drills and are intended for applications where accurate, repeatable metal drilling is required. The compact set of ten identical bits provides quick replacement on the job and reduces downtime when working with metal components in workshops, construction sites or maintenance environments.

Advantages

The HSS material provides good hardness and heat resistance for metalworking, extending tool life under typical drilling speeds. A consistent 4.0 mm diameter across the set ensures uniform hole size and simplifies bit selection. The set format of 10 pieces offers cost-effective spare capacity for repetitive tasks and reduces the need for frequent reordering. These bits are compatible with standard drill chucks and can be used in both portable and stationary drilling machines.

Suitable for

• Drilling holes in mild and low-alloy steels
• Workshop fabrications and metal repair work
• Construction and maintenance tasks involving sheet metal and structure components
• Replacing worn bits during production or service jobs

Key specifications

• Material: High-speed steel (HSS)
• Diameter: 4.0 mm
• Quantity: 10 pieces per set
• Suitable for: Handheld and bench drills
• Application: Drilling non-hardened metals

How to use

Select a compatible drill and secure the workpiece to prevent movement. Fit the 4.0 mm HSS bit into the drill chuck and tighten securely. Use appropriate cutting fluid for prolonged drilling in metal to reduce heat and wear. Start at low speed to establish the hole, then increase speed according to material and drill type while maintaining steady pressure. After use, clean chips from the flutes and store bits in a dry place to avoid corrosion.

Usage recommendations

For best results when drilling steel and other non-hardened metals, use cutting oil, moderate drill speeds and steady feed pressure. Replace bits from the set as soon as wear affects hole quality to maintain accuracy and prevent workpiece damage.