RUKO SPB-DIN338-8.1mm-HSSCo kierrepora, HSS-Co5, 8,1 mm, DIN 338, 135° kärkikulma

Precision-ground HSS-Co5 twist drill bit with 135° self-centering point for efficient drilling in tough materials.

Overview

The RUKO SPB-DIN338-8.1mm-HSSCo is a high-performance twist drill bit manufactured to DIN 338 standards. Made from high-speed steel with 5% cobalt (HSS-Co5), it offers excellent heat and wear resistance, making it suitable for drilling alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals. The bright, uncoated finish and fully ground flutes ensure precise chip removal and accurate holes.

What stands out

• 135° split point for self-centering and reduced walking
• Cobalt alloyed HSS for high hardness and heat resistance
• Right-hand cutting with cylindrical shank for standard chucks
• DIN 338 compliant with h8 tolerance for consistent diameter

Technical details

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co5 (5% cobalt)
• Diameter: 8.1 mm
• Overall length: 117 mm
• Flute length: 75 mm
• Shank: Cylindrical (straight)
• Point angle: 135°
• Cutting direction: Right-hand
• Surface finish: Bright (uncoated)
• Tolerance: h8
• Packaging quantity: 1 piece

Our verdict

A professional-grade cobalt twist drill bit that delivers precision and durability for demanding metalworking tasks.