RUKO KES-DIN335-HSS-TiAlN-90°-Ø11.5mm Countersink Bit

For machinists and metalworkers who need clean, precise countersinks in tough materials, the RUKO KES-DIN335-HSS-TiAlN-90°-Ø11.5mm is a high-performance countersink bit. It cuts a 90° chamfer with an 11.5 mm cutting diameter, ideal for deburring and preparing holes for flat-head screws in steel, stainless steel, cast iron, non-ferrous metals, and plastics.

Key specifications

• Tool type: Countersink bit
• Standard: DIN 335 C
• Cutting diameter: 11.5 mm
• Countersink angle: 90°
• Material: High-Speed Steel (HSS)
• Coating: Titanium Aluminum Nitride (TiAlN)
• Shank type: Cylindrical shank
• Shank diameter: 6 mm
• Overall length: 50 mm
• Flute length: 10 mm
• Number of flutes: 3
• Cutting direction: Right-hand
• Recommended applications: Deburring, chamfering, countersinking
• Suitable materials: Steel, cast iron, non-ferrous metals, plastics, stainless steel
• Manufacturing process: Ground profile
• Max. tensile strength of material: Up to 1200 N/mm²
• Point geometry: Conical
• Packaging unit: 1 piece

Why choose it

The TiAlN coating provides high hardness and heat resistance, extending tool life and allowing higher cutting speeds. The 3-flute design ensures smooth, chatter-free countersinking, while the HSS substrate offers toughness and wear resistance. The cylindrical shank fits standard drill chucks and collets.

Ideal use cases

• Countersinking holes for flat-head screws in metalworking
• Deburring drilled holes in steel and stainless steel
• Chamfering edges on machined parts
• Preparing holes in non-ferrous metals and plastics

Good to know

This countersink is manufactured to DIN 335 C, ensuring consistent geometry and performance. It is suitable for use on materials with tensile strength up to 1200 N/mm². The ground profile provides sharp cutting edges for clean results.