RUKO SPB-DIN1897-HSSCo-Ø4,8mm broca helicoidal extra curta

For machinists and metalworking professionals drilling high-alloy steels, stainless steel, or cast iron, the RUKO SPB-DIN1897-HSSCo-Ø4.8mm extra short twist drill bit delivers reliable performance in tight spaces. Its fully ground HSS-Co construction with 5% cobalt provides high heat resistance and excellent durability, making it a dependable choice for demanding industrial applications.

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 1897 (extra short series)
• Material: High-speed steel with 5% cobalt (HSS-Co)
• Diameter: 4.8 mm
• Shank type: Cylindrical (parallel shank)
• Total length: 50 mm
• Working length: 24 mm
• Point angle: 130°
• Surface finish: Bright
• Cutting direction: Right-hand cutting
• Manufacturing process: Fully ground
• Tolerance: h8
• Suitable materials: High-alloy steels, stainless steel, acid and heat resistant steels, cast iron, bronze, hard plastics

Why choose it

The extra short design increases rigidity, reducing deflection and improving hole accuracy, especially in portable drilling or CNC operations. The cobalt alloyed HSS maintains hardness at elevated temperatures, extending tool life when machining tough materials.

Ideal use cases

• Drilling stainless steel and high-alloy steel components
• Precision hole-making in cast iron and bronze
• Industrial maintenance and metal fabrication
• Professional workshops requiring consistent hole quality

Good to know

This drill bit conforms to DIN 1897, ensuring dimensional compatibility with standard tool holders and collets. The bright finish provides a clean surface for chip evacuation and corrosion resistance during storage.