Broca helicoidal RUKO SPB-DIN1897-HSSCo-Ø6,8mm HSS-Co série curta

This RUKO twist drill bit is built for precision drilling in tough materials. The 5% cobalt alloyed high-speed steel provides high heat resistance and wear resistance, making it suitable for stainless steel, alloyed steel, cast iron, and non-ferrous metals. The short series design per DIN 1897 offers increased rigidity for accurate holes.

Highlights

• HSS-Co with 5% cobalt for high hardness and heat resistance
• Split point tip for self-centering and reduced walking
• 135° point angle for efficient cutting in hard materials
• Bright finish for clean, sharp cutting edges
• Right-hand cutting, cylindrical shank for standard chucks

In daily use

The split point tip eliminates the need for center punching, allowing you to start drilling accurately on flat or curved surfaces. The short flute length enhances stability, reducing vibration and improving hole quality. Suitable for use in hand drills and drill presses with a 6.8 mm chuck capacity.

Full specifications

• Drill Bit Type: Twist Drill Bit
• Standard: DIN 1897 (Short Series)
• Material: HSS-Co (High-Speed Steel with Cobalt)
• Cobalt Content: 5%
• Drill Diameter: 6.8 mm
• Shank Type: Cylindrical (Parallel) Shank
• Shank Diameter: 6.8 mm
• Overall Length (l1): 79 mm
• Flute Length (l2): 43 mm
• Point Angle: 135°
• Point Type: Split Point (Self-centering)
• Surface Treatment: Bright / Vaporized
• Helix Angle: Normal (Type N)
• Tolerance: h8
• Cutting Direction: Right-hand cutting
• Recommended Materials: Stainless Steel, Alloyed Steel, Cast Iron, Non-ferrous Metals

Final note

For professional results in demanding applications, this drill bit delivers consistent performance and long tool life.