RUKO SPB-DIN338-6,1mm-HSSCo špirálový vrták, 6,1 mm, HSS-Co 5%, DIN 338, Split Point, 135°

For machinists drilling stainless and acid-resistant steels, the RUKO SPB-DIN338-6.1mm-HSSCo twist drill bit delivers precise holes with high heat resistance. Its 5% cobalt HSS-Co construction withstands demanding applications, while the 135° split point ensures self-centering and reduced walking.

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 6.1 mm
• Total length: 101 mm
• Working length: 63 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point type: Split point (cross-ground)
• Cutting direction: Right-hand cutting
• Surface finish: Bright
• Manufacturing process: Fully ground
• Tolerance: h8

Why choose it

The cobalt alloy provides very high heat and wear resistance, extending tool life in tough materials. The split point geometry improves centering accuracy, reducing the need for center punching and enhancing hole quality.

Ideal use cases

• Stainless steel and acid-resistant steel
• Heat-resistant and high-alloy steels
• Cast iron, bronze, and non-ferrous metals

Good to know

Part of the Ruko 204 series, this drill bit is supplied as a single unit. Its bright finish and fully ground flutes ensure smooth chip evacuation and consistent performance.