RUKO SPB-DIN1897-HSSCo-Ø5.2mm Stub Drill Bit

Precision-ground from HSS-Co with 5% cobalt, this stub drill bit delivers exceptional heat resistance and wear resistance for demanding metalworking tasks. The 130° split point ensures self-centering and reduces feed pressure, enabling accurate starts without a center punch.

Overview

The RUKO SPB-DIN1897-HSSCo-Ø5.2mm is a stub-length twist drill bit engineered to DIN 1897 standards. Its short overall length of 86 mm and flute length of 47 mm provide high rigidity, making it ideal for accurate hole positioning in hand drills, pillar drills, and automatic machines. The cylindrical shank with h8 tolerance ensures secure clamping and precise concentricity.

What stands out

• High-speed steel with 5% cobalt for superior hardness and heat resistance
• 130° split point for self-centering and reduced feed pressure
• Fully ground flutes and bright finish for efficient chip evacuation
• Stub length for enhanced stability and reduced deflection
• Suitable for high-alloy steels, stainless steel, acid-resistant steels, cast iron, bronze, and plastics

Technical details

• Drill bit type: Stub drill bit
• Standard: DIN 1897
• Material: HSS-Co (5% cobalt)
• Diameter: 5.2 mm
• Overall length: 86 mm
• Flute length: 47 mm
• Shank type: Cylindrical
• Point angle: 130°
• Point grind: Split point
• Cutting direction: Right-hand
• Surface finish: Bright
• Tolerance: h8

Our verdict

A professional-grade stub drill bit that excels in tough materials, offering precision and durability in a compact form.