Milwaukee Metal HSS-Co Drill Bit 5.5 mm, 10-Pack, DIN 338, Split Point, 135°

Precision-ground from a 5% cobalt alloy, this Milwaukee drill bit set offers a significant step up in heat resistance and edge retention compared to standard HSS bits. The 5.5 mm diameter and 10-piece pack make it a practical choice for repetitive drilling in tough metals, where consistent performance and long service life are essential.

Highlights

• HSS-Co (cobalt high-speed steel) construction withstands high temperatures and maintains hardness.
• 135° split point tip reduces walking and requires less centre punching.
• Precision ground flutes ensure accurate hole sizing and efficient chip evacuation.
• DIN 338 compliance guarantees consistent geometry and quality.
• Uncoated bright finish allows for easy resharpening and inspection.

In daily use

Whether you are working with stainless steel, alloyed steel, or cast iron, these bits deliver clean, accurate holes with minimal effort. The cylindrical shank fits standard drill chucks, and the 57 mm working length provides ample reach for most workshop tasks. The split point design starts fast and reduces the need for a pilot hole, saving time on every hole.

Full specifications

• Drill bit type: Twist drill bit (HSS-Co)
• Diameter: 5.5 mm
• Total length: 93 mm
• Working length (flute length): 57 mm
• Shank type: Cylindrical
• Shank diameter: 5.5 mm
• Point angle: 135°
• Tip type: Split point
• Material composition: 5% cobalt alloy
• Standard: DIN 338
• Application materials: Stainless steel, alloyed steel, non-alloyed steel, cast iron, non-ferrous metals
• Manufacturing process: Precision ground
• Coating: Uncoated (bright finish)
• Packaging: Plastic case / blister pack
• Quantity: 10 pieces

Final note

For professionals who demand reliability in metal drilling, this Milwaukee set offers a balanced combination of durability, precision, and value. The cobalt alloy ensures these bits stay sharp longer, reducing downtime and replacement costs.