RUKO 215 Series HSS-Co Twist Drill Bit DIN 338, 21/64 in (8.334 mm), 135° Split Point, Bright Finish

Precision-ground from solid HSS-Co with 5% cobalt, this RUKO 215 Series twist drill bit delivers high heat resistance and reliable performance in tough materials. The 135° split point starts on contact without walking, while the DIN 338 jobber length suits both handheld and pillar drills.

Overview

Engineered for demanding drilling tasks, the RUKO SPB-DIN338-21/64-HSSCo combines a 21/64 inch (8.334 mm) diameter with a robust HSS-Co body. Its bright finish and right-hand spiral flutes ensure efficient chip evacuation and long tool life.

What stands out

• 5% cobalt HSS for high heat resistance and durability
• 135° split point for self-centering and reduced thrust
• DIN 338 standard: 117 mm total length, 75 mm flute length
• h8 tolerance for precise hole sizing
• Suitable for steel, stainless steel, cast iron, non-ferrous metals, and plastics

Technical details

• Drill bit type: Twist drill bit
• Standard: DIN 338 (jobber length)
• Material: HSS-Co (5% cobalt)
• Diameter: 21/64 inch (8.334 mm)
• Point angle: 135°
• Point type: Split point
• Flute type: Right-hand spiral
• Surface finish: Bright
• Total length: 117 mm
• Flute length: 75 mm
• Tolerance: h8
• Shank type: Cylindrical
• Manufacturing process: Ground from solid
• Recommended use: Handheld drills, pillar drills
• Packaging quantity: 1 piece

Our verdict

A professional-grade cobalt drill bit that excels in hard metals—ideal for workshops needing precision and longevity.