RUKO SPB-DIN338-HSS-TiN-Ø6,9mm σπειροειδές τρυπάνι

Precision drilling in tough materials demands a bit that stays sharp and true. The RUKO SPB-DIN338-HSS-TiN Ø6.9mm twist drill bit meets that demand with a titanium nitride coating that reduces friction and heat, extending tool life and improving hole quality.

Who is it for

Professional machinists, metalworkers, and serious DIYers who need reliable performance in alloyed and unalloyed steel, cast iron, non-ferrous metals, and plastics.

Main features

• High-speed steel (HSS) body with TiN coating for wear resistance
• DIN 338 standard dimensions: 109 mm overall length, 69 mm flute length
• 118° point angle for general-purpose drilling
• Right-hand cutting direction, cylindrical shank, h8 tolerance
• Ground from solid for accuracy and concentricity

Specifications

• Diameter: 6.9 mm
• Material: High-Speed Steel (HSS)
• Coating: Titanium Nitride (TiN)
• Standard: DIN 338
• Overall Length: 109 mm
• Flute Length: 69 mm
• Point Angle: 118°
• Cutting Direction: Right-hand
• Shank Type: Cylindrical
• Tolerance: h8
• Flute Type: Standard (Type N)
• Number of Flutes: 2
• Manufacturing Process: Ground from solid
• Recommended Material Hardness: Up to 900 N/mm²

Tips

Use cutting fluid when drilling steel to maximize bit life. For best results, start with a center punch or pilot hole to prevent walking.