Drill Bit EPM HSS cylindrical for metal 5.5 mm (E-500-1055)

Cylindrical HSS drill bit by EPM with a 5.5 mm cutting diameter, intended for drilling metal. Manufactured from high-speed steel (HSS), this drill bit offers improved wear resistance and thermal stability compared with standard carbon-steel bits. It is designed for use in handheld drills and drill presses and is suitable for general metalworking tasks including drilling through steel, cast iron and non‑ferrous metals in workshop repairs, maintenance and production environments.

Advantages

The EPM HSS cylindrical drill bit provides consistent cutting performance and a longer service life under moderate to high cutting temperatures. Its HSS material maintains hardness at elevated temperatures, reducing wear and chipping during sustained drilling. The standard cylindrical shank ensures secure mounting in chucks and easy interchangeability between tools. The 5.5 mm diameter offers a common size for through-holes, pilot holes and fastening applications.

Suitable for

• Drilling holes in steel and iron components
• Working with non‑ferrous metals such as aluminium and brass
• Workshop repairs and maintenance tasks
• Use in handheld drills and drill presses
• Creating pilot holes for tapping and fastening

Key specifications

• Material: High-speed steel (HSS)
• Shank type: Cylindrical shank for standard chucks
• Cutting diameter: 5.5 mm
• Intended application: Metal drilling (ferrous and non‑ferrous)
• Typical use cases: Through-holes, pilot holes, maintenance and fabrication

How to use

Select an appropriate cutting speed and drill bit feed for the metal being machined; slower speeds are recommended for harder steels while higher speeds suit softer non‑ferrous metals. Secure the workpiece and mount the 5.5 mm HSS bit firmly in the drill chuck. Use cutting fluid or lubricant when drilling ferrous metals to reduce heat and prolong tool life. Apply steady axial pressure and clear chips periodically to avoid clogging and overheating. Finish holes by deburring edges if required.

Usage recommendations

For best results, use recommended drilling speeds for HSS bits and maintain adequate lubrication when working with steels. Replace the bit if signs of significant wear, chipping or excessive runout appear. Store the drill bit in a dry place and handle it with care to preserve cutting edge geometry.