RUKO KES-DIN335-HSS-TiN-90°-9.4mm Conical Countersink Bit, DIN 335 C, HSS, TiN Coated, 3-Flute, 9.4 mm Cutting Diameter, 90° Angle

The RUKO KES-DIN335-HSS-TiN-90°-9.4mm conical countersink bit delivers precise 90° countersinking, deburring, and chamfering in steel, cast iron, non-ferrous metals, and plastics. Its titanium nitride (TiN) coating reduces friction and increases heat resistance up to 600°C, extending tool life even in demanding applications.

Advantages

Ground from high-speed steel (HSS) with three sharp cutting edges, this countersink produces clean, chatter-free finishes. The TiN coating provides a hard, low-friction surface that resists wear and built-up edge, while the cylindrical shank ensures secure clamping in drill chucks and collets.

Suitable for

• Countersinking holes for flat-head screws to DIN 335 C
• Deburring drilled holes and edges
• Chamfering workpiece edges
• Use in hand drills, pillar drills, and machining centers

Key specifications

• Tool type: Conical countersink
• Standard: DIN 335 C
• Material: High-speed steel (HSS)
• Coating: Titanium nitride (TiN)
• Cutting diameter: 9.4 mm
• Countersink angle: 90°
• Shank type: Cylindrical
• Shank diameter: 6 mm
• Number of flutes: 3
• Overall length: 45 mm
• Cutting direction: Right-hand
• Manufacturing process: Ground
• Heat resistance: Up to 600°C

Recommendations

For best results, use a cutting speed appropriate for the workpiece material and apply a suitable cutting fluid when countersinking steel or cast iron. Ensure the tool is securely held and the workpiece is clamped to prevent vibration.