RUKO SPB-DIN338-HSS-TiN kierrepora 7,4 mm

Machinists and metalworkers in workshops and industrial settings rely on the RUKO SPB-DIN338-HSS-TiN twist drill bit for precise drilling in steel, cast iron, non-ferrous metals, and plastics. This 7.4 mm bit is ground from solid high-speed steel and coated with titanium nitride for high wear resistance and heat resistance, making it suitable for materials with tensile strength up to 900 N/mm².

Key specifications

• Diameter: 7.4 mm
• Standard: DIN 338
• Material: High-speed steel (HSS) with TiN coating
• Overall length: 117 mm
• Flute length: 75 mm
• Point angle: 118°
• Shank: Cylindrical
• Cutting direction: Right-hand
• Tolerance: h8
• Manufacturing process: Ground from solid

Why choose it

The TiN coating provides a hard, wear-resistant surface that extends tool life and allows higher cutting speeds. The precise h8 tolerance ensures accurate hole diameters, while the 118° point angle is suitable for general-purpose drilling in a wide range of materials.

Ideal use cases

• Drilling steel and cast iron in metalworking shops
• Creating holes in non-ferrous metals such as aluminum and brass
• Working with plastics in fabrication and repair tasks

Good to know

The drill bit is manufactured to DIN 338, a common standard for short series twist drills with cylindrical shanks. It is sold as a single piece.