RUKO SPB-DIN338-TypUNI-HSSCo-5.00 mm Twist Drill Bit

For machinists and metalworkers drilling high-alloy steels, stainless steel, or acid-resistant steels, this RUKO twist drill bit delivers reliable performance. The 5.0 mm diameter and DIN 338 standard make it a precise tool for demanding applications where heat and wear resistance are critical.

Key specifications

• Drill bit type: Twist drill bit
• Material: HSSCo 5 (high-speed steel with 5% cobalt)
• Standard: DIN 338
• Diameter: 5.0 mm
• Overall length: 86 mm
• Working length: 52 mm
• Shank type: Cylindrical
• Point angle: 130°
• Point grind: Split point
• Cutting direction: Right-hand cutting
• Tolerance: h8
• Surface finish: Bright
• Manufacturing process: Fully ground

Why choose it

The cobalt alloyed steel provides very high heat and wear resistance, allowing the bit to maintain hardness at elevated temperatures. The split point geometry ensures self-centering and reduces walking, while the fully ground flutes offer excellent chip removal for efficient drilling.

Ideal use cases

• Drilling high-alloy steels
• Working with stainless and acid-resistant steels
• Machining heat-resistant steels and cast iron
• Drilling bronze

Good to know

This drill bit is designed for use with stationary drills and drill stands. The bright surface finish provides a clean appearance and corrosion resistance in storage.