Drill bit Abraboro HSS‑Co for metal 16.0 mm cutting diameter, 178 mm overall length, 120 mm flute length

Solid HSS‑Co (cobalt) twist drill bit Abraboro for metal, 16.0 mm cutting diameter with 178 mm overall length and 120 mm flute length. This tool is manufactured from high-speed steel with cobalt alloy to increase heat resistance and wear resistance during metal drilling. It is intended for machining operations on steel and other ferrous materials, and is suitable for use in workshop drilling machines, drill presses and portable drills when correct clamping and coolant are applied.

Advantages

The HSS‑Co composition provides higher red hardness and improved wear resistance compared with standard HSS, allowing longer tool life under elevated temperatures. The 120 mm flute length ensures efficient chip evacuation in deeper holes while the 178 mm overall length offers reach for through and slightly recessed drilling. The 16.0 mm diameter is a common size for structural and mechanical applications, and the solid twist design offers reliable concentricity and stable cutting performance when properly clamped.

Suitable for

• Drilling through carbon steel, alloy steel and other ferrous metals
• Workshop drilling machines and drill presses
• Maintenance, repair and mechanical assembly tasks
• Applications requiring improved heat resistance and wear life

Key specifications

• Cutting diameter: 16.0 mm
• Overall length: 178 mm
• Flute (working) length: 120 mm
• Material: High-speed steel with cobalt (HSS‑Co)
• Tip/geometry: solid twist drill design suitable for ferrous metals

How to use

Secure the drill bit in a suitable chuck with adequate clamping capacity and ensure correct alignment. Select drill speed appropriate for the workpiece material and diameter; use lower speeds for larger diameters and harder steels. Apply cutting fluid or coolant to reduce heat and improve chip evacuation. Use steady feed pressure and withdraw periodically on deep holes to clear chips and prevent clogging. After use, clean chips from the flutes and store the bit in a protective holder to avoid damage.

Usage recommendations

For best results on steel and hardened alloys, use appropriate coolant, correct spindle speed and a rigid setup. Inspect cutting edges before each use and replace the drill when wear or chipping affects cutting quality. When drilling larger diameters, consider pilot drilling and pecking cycles to improve hole quality and chip control.