Drill Bit MODECO HSS cylindrical 5.5 mm set of 10 (MN-60-255)

Set of 10 MODECO HSS cylindrical drill bits with a 5.5 mm diameter designed for drilling in metal. Manufactured from high-speed steel (HSS), these bits combine hardness and wear resistance to provide consistent cutting performance across a range of ferrous and non-ferrous metals. The cylindrical shank is compatible with standard chucks and holds securely during common workshop and maintenance operations.

Advantages

The HSS material offers elevated heat resistance and edge retention compared with general-purpose carbon steel bits, reducing the frequency of re-sharpening and extending service life under normal use. The consistent 5.5 mm diameter ensures repeatable hole sizes for assembly and fastening tasks. Cylindrical shanks simplify mounting in a wide variety of hand-held and bench drill chucks, while the set format of ten pieces provides spares for multi-hole projects and reduces downtime when bits wear out.

Suitable for

• Drilling holes in mild steel, stainless steel, aluminum and other common metal alloys
• Workshop and maintenance repairs
• Metal fabrication and light assembly work
• Preparing pilot holes for tapping and fastener installation

Key specifications

• Material: High-speed steel (HSS)
• Tip type: Standard twist point suitable for metal
• Diameter: 5.5 mm
• Shank style: Cylindrical (straight) shank for standard chucks
• Quantity: Set of 10 drill bits
• Typical applications: Through holes, pilot holes and fastening preparation in various metals

How to use

Secure the cylindrical shank in the drill chuck and tighten firmly. Select an appropriate drilling speed for the metal being worked: lower speeds for harder steels, higher speeds for softer metals such as aluminum. Use cutting fluid or lubricant when drilling steel to reduce heat and improve chip removal. Apply steady, even feed pressure without forcing the bit; withdraw periodically to clear chips when drilling deeper holes. After use, clean chips from the flutes and store the bits dry to prevent corrosion.

Usage recommendations

For best results when drilling metal, start with a centre punch to locate the hole, use moderate speeds and cutting fluid, and replace worn bits promptly to maintain hole accuracy and reduce workpiece damage.