RUKO SPB-DIN338-HSS-TiN spiraalipora 25/64 tuumaa (9,92 mm) DIN 338 TiN-pinnoitettu

Professional machinists and metalworkers rely on this RUKO twist drill bit for precise, repeatable holes in steel and cast iron. The 25/64 inch (9.92 mm) diameter and DIN 338 geometry deliver accurate, clean bores in workshops and production environments.

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: High-speed steel (HSS)
• Coating: Titanium nitride (TiN)
• Diameter: 25/64 inch (9.92 mm)
• Shank type: Cylindrical
• Point angle: 118°
• Flute type: Right-hand cutting
• Overall length: 133 mm
• Working length (flute length): 87 mm
• Tolerance: h8
• Manufacturing process: Ground from solid
• Heat resistance: Up to 600°C
• Colour: Gold

Why choose it

The TiN coating reduces friction and heat build-up, extending tool life and improving chip evacuation. The ground-from-solid construction ensures consistent accuracy and a stable cutting edge, even in demanding applications.

Ideal use cases

• Drilling steel and cast iron
• Non-ferrous metals such as aluminium and brass
• Plastics and other machinable materials

Good to know

This drill bit is manufactured to DIN 338, the European standard for short series twist drills, ensuring compatibility with standard drill chucks and collets. The cylindrical shank provides secure clamping and concentric running.