RUKO DIN 345 Broca helicoidal HSS 39,0 mm haste cónica Morse MT4

Machinists and metalworkers in workshops and manufacturing facilities rely on this RUKO DIN 345 twist drill bit for creating precise 39.0 mm holes in steel, cast iron, and non-ferrous metals. Its Morse taper shank (MT4) ensures secure mounting in drilling machines, lathes, and milling machines, delivering stability during heavy-duty drilling operations.

Key specifications

• Drill diameter: 39.0 mm
• Standard: DIN 345
• Material: High-speed steel (HSS)
• Shank type: Morse taper, size MT4
• Cutting direction: Right-hand
• Point angle: 118°
• Total length: 390 mm
• Flute length: 240 mm
• Tolerance: h8
• Surface: Bright (uncoated)
• Manufacturing process: Ground from solid

Why choose it

Ground from solid HSS, this drill bit offers excellent cutting performance and durability. The bright finish reduces friction and chip adhesion, while the standard 118° point angle provides a good balance for general-purpose drilling. The Morse taper shank ensures a positive drive and easy tool changes.

Ideal use cases

• Drilling large-diameter holes in steel plates and structural components
• Creating holes in cast iron machine parts
• Working with non-ferrous metals and plastics in general fabrication

Good to know

The drill bit is manufactured to DIN 345, ensuring consistent quality and interchangeability. It is suitable for use with compatible Morse taper adapters and sleeves. For optimal results, use appropriate cutting fluid and adhere to recommended speeds and feeds for the material being drilled.