RUKO SPB-DIN338-5.9mm HSSCo Twist Drill Bit

Precision-ground 5.9 mm twist drill bit with 5% cobalt HSS-Co for tough industrial drilling in steel up to 1100 N/mm².

Overview

The RUKO SPB-DIN338-5.9mm-HSSCo is a professional-grade twist drill bit engineered for high-performance drilling in demanding materials. Manufactured to DIN 338 standards, it features a fully ground body with a bright polished finish and a self-centering split point for accurate hole positioning without a center punch.

What stands out

• High-speed steel with 5% cobalt (HSS-Co) for superior heat resistance and extended tool life.
• 130° split point angle ensures fast penetration and reduced walking on hard surfaces.
• Suitable for alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals, and plastics.
• Right-hand spiral flute design for efficient chip evacuation in deep holes.
• Precision ground to h8 tolerance for consistent hole sizing.

Technical details

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 5.9 mm
• Overall length: 93 mm
• Working length: 57 mm
• Shank type: Cylindrical
• Shank diameter: 5.9 mm
• Point angle: 130°
• Flute type: Right-hand spiral
• Surface finish: Bright polished
• Manufacturing process: Fully ground
• Tolerance: h8
• Max tensile strength: 1100 N/mm²
• Self-centering point: Yes (split point)
• Cutting direction: Right-hand cut

Our verdict

A reliable cobalt drill bit for workshops that demand precision and durability in hard steels and stainless alloys.