RUKO LOS-HSSCo-168mm HSS-Co Twist Drill Bit 3.0 mm DIN 340 Long Series

The RUKO LOS-HSSCo-168mm is a long-series twist drill bit made from HSS-Co (5% cobalt high-speed steel), fully ground with a bright finish. Its 135° split point provides self-centering and reduces walking, while the DIN 340 long flute design reaches deep holes that standard jobber bits cannot. The cylindrical shank fits standard drill chucks, and the h8 tolerance ensures consistent hole sizing in demanding industrial work.

Highlights

• HSS-Co with 5% cobalt for high heat resistance and durability
• DIN 340 long series: total length 168 mm, flute length 114 mm
• 135° split point for accurate starting without a center punch
• Fully ground, bright finish for smooth chip evacuation
• Suited for alloyed/unalloyed steel, stainless steel, cast iron, non-ferrous metals, and plastics

Full specifications

• Drill bit type: Twist drill bit
• Standard: DIN 340 (Long Series)
• Material: HSS-Co (High-Speed Steel with Cobalt)
• Cobalt content: 5%
• Drill diameter: 3.0 mm
• Total length: 168 mm
• Working length (flute length): 114 mm
• Shank type: Cylindrical
• Shank diameter: 3.0 mm
• Point angle: 135°
• Point type: Split point (self-centering)
• Surface finish: Bright (uncoated)
• Manufacturing process: Fully ground
• Tolerance: h8
• Application materials: Alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals, plastics
• Recommended use: Industrial, professional
• Packaging quantity: 1 piece

Final note

Engineered for deep-hole drilling where precision and tool life are critical, this RUKO bit delivers consistent performance in tough materials.