RUKO 1000026340 SPB-DIN338 6.4mm HSS-Co Twist Drill Bit

For machinists and metalworkers drilling alloyed or stainless steels, the RUKO SPB-DIN338 6.4mm HSS-Co twist drill bit delivers reliable performance in demanding materials. Its 5% cobalt high-speed steel construction withstands high temperatures, while the split point grind ensures precise centering and reduced walking.

Key specifications

• Drill bit type: Twist drill bit
• Material: High-speed steel with 5% cobalt (HSS-Co)
• Diameter: 6.4 mm
• Total length: 101 mm
• Working length: 63 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point grind: Split point
• Cutting direction: Right-hand
• Surface finish: Bright
• Tolerance: h8
• Standard: DIN 338

Why choose it

The cobalt alloyed steel retains hardness at elevated temperatures, making this bit suitable for continuous use on tough materials. The split point design provides accurate starts without a center punch, and the fully ground flutes ensure efficient chip removal.

Ideal use cases

• Drilling alloyed and unalloyed steel up to 1100 N/mm² tensile strength
• Stainless steel, cast iron, and non-ferrous metals
• General purpose drilling in plastics and other materials

Good to know

Part of the RUKO 204 series, this bit is manufactured to DIN 338 specifications with a bright finish. It is designed for right-hand rotation and offers high heat resistance for demanding workshop applications.