RUKO LOS-HSSCo-127mm HSS-Co5 Twist Drill Bit 12.7mm DIN 338 Split Point

With a 135° split point and 5% cobalt alloy, this 12.7 mm twist drill bit delivers self-centering starts and high heat resistance in tough steels and stainless alloys.

Overview

The RUKO GMBH LOS-HSSCo-127mm is a fully ground, right-hand twist drill bit made from HSS-Co5 high-speed steel with 5% cobalt. It conforms to DIN 338 and features a cylindrical shank, bright finish, and standard spiral flute. The 135° split point eliminates walking and reduces thrust, while the cobalt content ensures excellent wear resistance and high heat tolerance for professional and industrial applications.

What stands out

• 5% cobalt (HSS-Co5) for superior hardness and heat resistance
• 135° split point for self-centering and reduced drilling pressure
• Fully ground flutes for precise hole quality and efficient chip evacuation
• DIN 338 standard dimensions: 151 mm overall length, 101 mm flute length
• Versatile across steel, stainless steel, cast iron, non-ferrous metals, and hard plastics

Technical details

• Diameter: 12.7 mm
• Overall length: 151 mm
• Flute length: 101 mm
• Shank type: Cylindrical
• Point angle: 135°
• Material: High-Speed Steel Cobalt (HSS-Co5)
• Standard: DIN 338
• Direction of cut: Right-hand
• Manufacturing process: Fully ground
• Surface finish: Bright
• Flute type: Standard spiral

Our verdict

A robust cobalt drill bit engineered for demanding metalworking tasks where precision, heat resistance, and longevity are critical.