Drill bit set Smart HSS for metal 9.4 mm — 5 pieces

Set of five Smart HSS drill bits with a 9.4 mm diameter designed for drilling metal. These bits are manufactured from high-speed steel (HSS), offering increased hardness and resistance to heat buildup during continuous drilling. The set is intended for use with handheld and stationary drills to make through-holes in steel, cast iron, non-ferrous metals and sheet metal of varying thicknesses. The consistent 9.4 mm size simplifies selection when a single hole diameter is required for fastening, doweling or conduit passage.

Advantages

The HSS material provides a balance of toughness and wear resistance appropriate for metalworking, while the precision-ground flutes ensure efficient chip evacuation and reduced clogging. The uniform 9.4 mm size across five pieces gives spare bits for repetitive tasks or replacements in case of wear. These bits are compatible with common drill chucks and suitable for both low- and medium-speed drilling applications where heat resistance and edge retention are important.

Suitable for

• Drilling through mild and low-alloy steel
• Creating holes in sheet metal and non-ferrous metals (aluminium, brass)
• Maintenance, repair and small fabrication jobs
• Handheld and drill-press applications requiring a consistent 9.4 mm hole

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 9.4 mm
• Quantity: 5 pieces
• Intended use: drilling metal (through-holes)
• Compatibility: standard drill chucks on handheld and stationary drills

How to use

Secure the workpiece and mark the drilling point. Use a center punch for improved accuracy on flat surfaces. Fit a single 9.4 mm HSS bit into the drill chuck and tighten securely. Start at low speed to establish the hole, applying steady pressure and increasing speed as appropriate for the material. Use cutting fluid or lubricant when drilling thicker or harder metals to reduce heat and extend bit life. Clear chips periodically to prevent clogging and overheating. After use, clean the bits and store them dry to avoid corrosion.

Usage recommendations

For best results, use light to moderate pressure and appropriate cutting fluid when drilling steel or other hard metals. Match drill speed to material hardness—lower speeds for harder metals and higher speeds for softer non-ferrous alloys. Replace bits once wear or chipping reduces cutting performance to avoid oversized or rough holes.