Drill bit for metal Smart HSS cylindrical 4.5 mm set of 10 (MPN 11-045)

Set of 10 Smart HSS cylindrical drill bits for metal, diameter 4.5 mm, designed for general workshop and maintenance use. Each bit is made from high-speed steel (HSS) to provide cutting performance suitable for drilling mild steel and similar ferrous materials. The cylindrical shank fits most standard chuck systems and is compatible with hand drills and drill presses for routine metalworking tasks.

Advantages

The HSS material offers a balance of hardness and toughness that supports reliable drilling through mild steel without excessive wear under normal operating conditions. The consistent 4.5 mm diameter and precision-ground cutting edges deliver repeatable hole sizes and clean chips. The cylindrical shank ensures straightforward mounting in common drill chucks and simplifies tool changes in workshop environments. Supplied as a set of ten, these bits provide immediate replacement options and reduce downtime during maintenance or small fabrication runs.

Suitable for

• Drilling through mild steel and similar ferrous materials
• General maintenance and repair work in workshops
• Light fabrication and assembly tasks
• Use with hand drills and small drill presses

Key specifications

• Material: high-speed steel (HSS)
• Diameter: 4.5 mm
• Shank type: cylindrical shank for standard chucks
• Quantity: set of 10 drill bits
• Suitable materials: mild steel and similar ferrous metals

How to use

Select a drill speed appropriate for the 4.5 mm HSS bit and the material being drilled; lower speeds are recommended for harder ferrous metals. Secure the workpiece and mount the bit firmly in the drill chuck to minimise runout. Use cutting fluid or lubricant when drilling steel to reduce heat and extend tool life. Apply steady, moderate pressure and back the bit out periodically to clear chips and avoid clogging. After use, clean and store the bits to prevent corrosion.

Usage recommendations

For best results when drilling mild steel, use a slow to medium spindle speed, consistent coolant or cutting oil, and replace worn bits promptly to maintain hole quality. Avoid excessive side loads and ensure the bit is properly centred to extend service life and achieve accurate holes.