RUKO SPB-DIN338-8.6mm HSSCo Twist Drill Bit, 8.6 mm, DIN 338, HSS-Co 5%, 125 mm

Precision-ground HSS-Co twist drill bit with 8.6 mm diameter, DIN 338, 5% cobalt alloy for tough materials. Split point and 135° tip for accurate starts without walking.

Overview

The RUKO SPB-DIN338-8.6mm-HSSCo is a high-performance twist drill bit engineered for demanding drilling tasks in hard-to-machine materials. Manufactured to DIN 338 standards, it features a fully ground HSS-Co (high-speed steel with 5% cobalt) body that delivers exceptional heat resistance and durability. The bright finish reduces friction and improves chip evacuation.

What stands out

• 5% cobalt HSS-Co construction for extended tool life in tough steels and stainless steel
• 135° split point (cross-ground) tip for self-centering and reduced thrust pressure
• Fully ground flutes with h8 tolerance for precise hole sizing
• Right-hand cutting direction suitable for standard drilling machines and cordless drills

Technical details

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co (5% cobalt)
• Diameter: 8.6 mm
• Total length: 125 mm
• Working length: 81 mm
• Shank: Cylindrical, 8.6 mm diameter
• Point angle: 135°
• Point grind: Split point
• Surface finish: Bright
• Manufacturing process: Fully ground
• Tolerance: h8
• Cutting direction: Right-hand
• Recommended materials: Alloyed/unalloyed steel, stainless steel, cast iron, non-ferrous metals, plastics
• Packaging quantity: 1 piece

Our verdict

A professional-grade twist drill bit that combines cobalt toughness with precision grinding. Ideal for workshops and demanding maintenance tasks where accuracy and tool life matter.