RUKO KES-Bit-HSS-90°-Ø6.3mm-L Countersink Bit

The RUKO KES-Bit-HSS-90°-Ø6.3mm-L is a high-speed steel countersink bit engineered for precise 90° countersinking, deburring, and chamfering in a wide range of materials. Its 3-flute design and bright finish ensure clean, chatter-free results, making it a reliable choice for both professional and workshop use.

Highlights

• High-speed steel (HSS) for durability and sharpness
• 90° cutting angle for standard countersinks
• 3-flute geometry for smooth, vibration-free cutting
• Cylindrical shank with 5 mm diameter for secure chuck grip
• DIN 335 C compliant for consistent performance

In daily use

This countersink bit excels at creating uniform chamfers and deburring holes in steel, cast iron, non-ferrous metals, and plastics. The 6.3 mm maximum cutting diameter and 8 mm flute length provide ample reach for most countersinking tasks, while the right-hand cutting direction ensures compatibility with standard drills and drivers.

Full specifications

• Tool type: Countersink bit
• Material: High-speed steel (HSS)
• Cutting angle: 90°
• Maximum cutting diameter: 6.3 mm
• Shank diameter: 5 mm
• Overall length: 45 mm
• Flute length: 8 mm
• Number of flutes: 3
• Standard: DIN 335 C
• Shank type: Cylindrical
• Coating: Uncoated (bright finish)
• Rotation direction: Right-hand cutting

Final note

For reliable countersinking in everyday materials, the RUKO KES-Bit-HSS-90°-Ø6.3mm-L delivers consistent results with its HSS construction and 3-flute design.