RUKO KEB-HSSCo 15.0 mm QuickIn Twist Drill Bit HSS-Co DIN 338

Precision-ground 15.0 mm HSS-Co twist drill bit with 135° split point and QuickIn shank for fast, self-centering drilling in tough materials.

Overview

The RUKO KEB-HSSCo-15,0mm-QuickIn is a high-performance twist drill bit engineered for demanding metalworking applications. Manufactured from HSS-Co (high-speed steel with 5% cobalt), it delivers superior heat resistance and durability compared to standard HSS bits. The 15.0 mm diameter is precision ground to h8 tolerance, ensuring accurate hole sizing. The QuickIn shank design allows for rapid bit changes in compatible chucks, reducing downtime in production environments.

What stands out

• 135° split point geometry eliminates walking and reduces thrust pressure, enabling precise starts without center punching.
• Cobalt alloyed HSS withstands high temperatures, maintaining hardness when drilling stainless steel and other tough alloys.
• QuickIn shank system provides secure, tool-free bit changes, ideal for repetitive drilling tasks.
• Bright uncoated finish reduces chip adhesion and allows easy resharpening.

Technical details

• Material: HSS-Co (5% cobalt)
• Diameter: 15.0 mm
• Shank type: QuickIn (cylindrical with QuickIn groove)
• Standard: DIN 338
• Point angle: 135°
• Point grind: Split point
• Overall length: 169 mm
• Flute length: 114 mm
• Cutting direction: Right-hand
• Tolerance: h8
• Surface finish: Bright (uncoated)
• Recommended materials: Steel, stainless steel, cast iron, non-ferrous metals

Our verdict

A professional-grade drill bit that excels in high-temperature, high-wear applications. The cobalt steel and split point make it a reliable choice for machinists and serious fabricators working with hard metals.