RUKO SPB-DIN338 6.2mm HSS-Co Twist Drill Bit

Precision drilling in tough materials demands a bit that stays sharp and true. The RUKO SPB-DIN338 6.2 mm HSS-Co twist drill bit is built for metalworkers and maintenance professionals who regularly bore into stainless steel, acid-resistant steel, heat-resistant steels, high-alloy steels, cast iron, bronze, and plastics. Its cobalt-alloyed high-speed steel and fully ground flutes deliver clean, accurate holes with less effort.

Key specifications

• Diameter: 6.2 mm
• Total length: 101 mm
• Working length: 63 mm
• Material: HSS-Co (5% cobalt)
• Standard: DIN 338
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point
• Surface finish: Bright
• Cutting direction: Right-hand
• Tolerance: h8

Why choose it

The split point design self-centers and reduces walking, so you can start holes accurately without a center punch. The 135° point angle is optimized for hard metals, and the cobalt content provides high heat and wear resistance for longer tool life. Fully ground from solid HSS-Co, this bit maintains its cutting edges even under demanding conditions.

Ideal use cases

• Drilling stainless steel and acid-resistant steel in fabrication shops
• Maintenance and repair work on heat-resistant alloys
• Precision holes in cast iron and bronze components
• Plastic fabrication where clean, burr-free holes are required

Good to know

The cylindrical shank fits standard drill chucks, and the DIN 338 dimensions ensure compatibility with common tooling. For best results, use appropriate cutting fluid and correct speeds for the material.