RUKO KES-Bit-HSS-TiN-90°-16.5mm Countersink Bit

Creating clean, burr-free countersinks in metal can be a challenge without the right tool. The RUKO KES-Bit-HSS-TiN-90°-16.5mm countersink bit solves this problem by delivering precise 90° chamfers in a single pass. Its 3-flute design and TiN coating reduce friction and heat, extending tool life and improving surface finish.

Who is it for

This countersink bit is ideal for professional machinists, metalworkers, and serious DIYers who need reliable performance in steel, stainless steel, cast iron, non-ferrous metals, and plastics. It suits industrial and professional applications where accuracy and durability are paramount.

Main features

• High-speed steel (HSS) body with titanium nitride (TiN) coating for enhanced wear resistance.
• 90° cutting angle for standard countersinks, deburring, and chamfering.
• 16.5 mm cutting diameter and 10 mm cylindrical shank for compatibility with common drill chucks.
• Three flutes for smooth cutting and efficient chip evacuation.
• Right-hand cutting direction, conforming to DIN 335 C.

Specifications

• Tool Type: Countersink Bit
• Material: High-Speed Steel (HSS)
• Coating: Titanium Nitride (TiN)
• Cutting Angle: 90°
• Cutting Diameter: 16.5 mm
• Shank Type: Cylindrical Shank
• Shank Diameter: 10 mm
• Overall Length: 60 mm
• Standard: DIN 335 C
• Number of Flutes: 3
• Cutting Direction: Right-Hand Cut
• Application: Countersinking, Deburring, Chamfering
• Suitable Materials: Steel, Stainless Steel, Cast Iron, Non-Ferrous Metals, Plastics
• Surface Finish: Bright / TiN Coated
• Recommended Use: Industrial, Professional
• Product Series: Karnasch 100 Series
• Packaging: Single Piece

Tips

Use a cutting fluid or lubricant when working with stainless steel or cast iron to maximize tool life. For best results, run the bit at the recommended speed for the material and apply steady, even pressure.