Broca helicoidal extra curta RUKO SPB-DIN1897-HSSCo-Ø5,7 mm

Machinists and metalworkers rely on the RUKO SPB-DIN1897-HSSCo-Ø5.7mm extra short twist drill bit for precise, stable drilling in tough materials. The 5.7 mm diameter and split point design make it a dependable choice for high-alloy steels, stainless steel, and titanium alloys.

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 1897 (extra short series)
• Material: HSS-Co (5% cobalt high-speed steel)
• Diameter: 5.7 mm
• Overall length: 62 mm
• Flute length: 29 mm
• Shank type: Parallel shank, 5.7 mm diameter
• Point angle: 135° split point
• Surface finish: Bright (uncoated)
• Manufacturing process: Fully ground
• Tolerance: h8
• Cutting direction: Right-hand

Why choose it

The extra short length increases rigidity, reducing deflection and improving hole accuracy. The 135° split point self-centers, minimizing walking and the need for center punching. Cobalt alloyed HSS withstands high temperatures, extending tool life in demanding applications.

Ideal use cases

• Drilling high-alloy steels and stainless steel
• Working with acid-resistant steel and cast iron
• Machining bronze and titanium alloys

Good to know

Supplied as a single piece. Suitable for right-hand cutting in machine tools and hand drills with proper clamping.