RUKO SPB-DIN338-HSSCo8-Ø2,4mm HSS-Co 8 kierrepora, DIN 338, 2,4 mm, kärkihionta 135°

For machinists and metalworking professionals drilling high-alloy steels, stainless steel, or acid-resistant materials, the RUKO SPB-DIN338-HSSCo8-Ø2.4mm twist drill bit delivers exceptional heat resistance and self-centering accuracy. Its 2.4 mm diameter and DIN 338 geometry make it a reliable choice for precision holes in demanding alloys.

Key specifications

• Drill bit type: Twist drill bit
• Material: HSS-Co 8 (high-speed steel with 8% cobalt)
• Standard: DIN 338
• Diameter: 2.4 mm
• Overall length: 57 mm
• Working length (flute length): 30 mm
• Shank type: Cylindrical (straight shank)
• Point angle: 135°
• Point type: Split point
• Surface finish: Bright (uncoated)
• Manufacturing process: Ground from solid
• Tolerance: h8
• Helix angle: Standard (Type N)
• Cutting direction: Right-hand cutting
• Recommended applications: High-alloy steels, stainless steel, acid-resistant steels, cast iron, bronze, hard plastics
• Heat resistance: Very high
• Self-centering: Yes (due to split point)

Why choose it

The 8% cobalt content provides superior hardness and heat resistance, allowing the bit to maintain cutting performance at high temperatures. The split point design ensures accurate starting without walking, reducing the need for center punching. Ground from solid, this drill bit offers consistent geometry and long tool life.

Ideal use cases

• Drilling stainless steel and acid-resistant steel components in machine shops
• Creating precise holes in high-alloy steel workpieces
• Working with cast iron and bronze in maintenance and repair
• Drilling hard plastics where a clean, accurate hole is required

Good to know

This drill bit conforms to DIN 338, the standard for short series twist drills with cylindrical shanks. Its bright finish is uncoated, which is suitable for general-purpose drilling in ferrous and non-ferrous metals. The h8 tolerance ensures a consistent diameter for reliable hole sizing.