Milwaukee HSS-Co Cobalt Metal Drill Bit 4.8 mm, Pack of 10

On a busy fabrication floor, a technician reaches for a Milwaukee HSS-Co Cobalt drill bit to bore through a stainless steel bracket. The 4.8 mm bit bites cleanly, its split point eliminating the need for center punching, while the cobalt alloy shrugs off the heat. This pack of 10 ensures the job keeps moving without interruption.

Key specifications

• Diameter: 4.8 mm
• Quantity: 10 bits
• Material: HSS-Co5 (5% cobalt high-speed steel)
• Point angle: 135° split point
• Shank: Cylindrical
• Standard: DIN 338
• Flute type: Ground
• Surface finish: Bronze/gold oxide
• Cutting direction: Right-hand

Why choose it

The 5% cobalt alloy delivers exceptional heat and abrasion resistance, allowing the bit to maintain hardness at high temperatures. The 135° split point starts on contact without walking, reducing setup time and improving accuracy. Ground flutes provide efficient chip evacuation, while the bronze oxide finish reduces friction and prevents corrosion. Built to DIN 338, these bits meet rigorous professional standards.

Ideal use cases

• Drilling stainless steel, cast iron, and acid-resistant steel
• Working with heat-resistant steels and non-ferrous metals
• Professional fabrication, maintenance, and industrial applications
• High-volume production where bit longevity matters

Good to know

These bits are engineered for right-hand rotation and are suitable for use with drill presses and handheld drills. The pack of 10 offers convenience and cost efficiency for workshops. For best results, use appropriate cutting fluid and moderate speed.