Drill Bit GRAPHITE 57H032 cobalt metal, cylindrical shank 5 mm

GRAPHITE cobalt metal drill bit 57H032 with a 5 mm cylindrical shank is designed for drilling hardened steels, stainless steels and other ferrous and non-ferrous metals. Manufactured from a cobalt alloy, this 5 mm drill provides improved heat resistance and longer service life compared with standard high-speed steel bits. The cylindrical shank allows secure clamping in hand drills and drill presses for precision metalworking, maintenance and repair operations.

Advantages

The cobalt alloy composition increases hardness at high cutting temperatures, reducing wear during continuous drilling of tough materials. The 5 mm diameter and accurately ground geometry ensure stable cutting performance, efficient chip evacuation and consistent hole quality. Compatibility with both hand drills and bench-mounted machines makes the bit versatile for workshop and on-site use.

Suitable for

• Drilling hardened steel and stainless steel
• Metal fabrication and assembly
• Maintenance, repair and replacement tasks
• Precision holes in ferrous and non-ferrous metals

Key specifications

• Material: cobalt alloy high-speed steel
• Shank type: cylindrical shank
• Diameter: 5 mm
• Application: drilling in hardened steels, stainless steels and other metals
• Suitable for: hand drills and drill presses

How to use

Secure the drill bit in the chuck of a hand drill or the spindle of a drill press, ensuring the cylindrical shank is firmly clamped. Select an appropriate rotational speed and feed for the material being drilled; lower speeds are recommended for hardened and stainless steels to reduce heat build-up. Use cutting fluid or coolant to improve chip evacuation and prolong tool life. Apply steady, even pressure and avoid excessive lateral forces to maintain drill geometry and achieve clean, accurate holes.

Usage recommendations

For best results when drilling hardened or stainless steels, use cutting oil and moderate speed, allow the bit to cool between long runs, and replace the bit when cutting performance or hole quality declines.