RUKO HSS-Co σπειροειδές τρυπάνι 5,5 mm DIN 338 Split Point 135°

Precision-ground from high-speed steel with cobalt alloy, this RUKO twist drill bit delivers exceptional heat resistance and durability in tough metals. The 135° split point self-centers on contact, eliminating the need for center punching and reducing walking on hard surfaces.

Overview

Engineered to DIN 338, this 5.5 mm drill bit features a cylindrical shank for secure chucking in rotary drills and drill presses. The bright bronze finish enhances chip flow and corrosion resistance, while the solid cobalt steel construction withstands high temperatures generated in alloyed and stainless steels.

What stands out

• 135° split point for precise self-centering and reduced thrust pressure
• Cobalt-enriched HSS for superior hardness and heat resistance
• Ground from solid for consistent geometry and long tool life
• Versatile across metal, alloyed steel, stainless steel, cast iron, and non-ferrous metals

Technical details

• Material: HSS-Co (High-Speed Steel Cobalt)
• Diameter: 5.5 mm
• Overall length: 83 mm
• Working length: 52 mm
• Shank type: Cylindrical
• Point angle: 135°
• Point type: Split point (self-centering)
• Standard: DIN 338
• Drill bit type: Twist drill
• Manufacturing process: Ground from solid

Our verdict

A professional-grade twist drill for demanding metalworking tasks, combining cobalt toughness with precision grinding for clean, accurate holes.