RUKO KES-DIN335-HSS-TiAlN-90°-6.3mm Countersink Bit

Creating clean, precise chamfers and countersinks in tough materials demands a tool that stays sharp and resists heat. This RUKO countersink bit, with its TiAlN-coated HSS body and 90° cutting angle, delivers exactly that—reliable performance for deburring and countersinking in steels, stainless steel, cast iron, non-ferrous metals, and plastics.

Who is it for

Machinists, metalworkers, and serious DIYers who need a durable, professional-grade countersink for frequent use in demanding applications. It fits standard drill chucks and collet chucks with its 6 mm straight shank.

Main features

• TiAlN (Titanium Aluminum Nitride) coating for high heat and wear resistance
• Ground from solid HSS for strength and precision
• Three precision-ground cutting edges for smooth results
• 90° cutting angle, ideal for standard countersunk screws
• 6.3 mm cutting diameter, 6 mm shank diameter
• 45 mm total length
• Conforms to DIN 335 C standard
• Compatible with wet or dry machining

Specifications

• Tool Type: Countersink Bit
• Standard: DIN 335 C
• Material: High-Speed Steel (HSS)
• Coating: Titanium Aluminum Nitride (TiAlN)
• Cutting Angle: 90°
• Cutting Diameter: 6.3 mm
• Shank Type: Straight Shank
• Shank Diameter: 6 mm
• Number of Flutes: 3
• Total Length: 45 mm
• Recommended Application: Deburring, Chamfering, Countersinking
• Suitable for Materials: Steel, Stainless Steel, Cast Iron, Non-ferrous metals, Plastics
• Manufacturing Process: Ground from solid
• Heat Resistance: High
• Wear Resistance: High
• Cutting Edge: Precision Ground
• Coolant Compatibility: Wet or Dry Machining
• Product Series: Professional Line
• Tool Holder Compatibility: Drill Chuck, Collet Chuck
• Packaging Quantity: 1

Tips

Use a consistent speed and light pressure for the best finish. The TiAlN coating allows dry machining, but a coolant can extend tool life further. Ensure the workpiece is securely clamped to avoid chatter.