RUKO DIN 338 HSS-TiN Twist Drill Bit 5.75 mm

Drilling precise holes in tough materials like steel or cast iron demands a bit that stays sharp and resists wear. The RUKO DIN 338 HSS-TiN twist drill bit with 5.75 mm diameter meets that challenge with a titanium nitride coating that reduces friction and extends tool life.

Who is it for

Professional machinists, metalworkers, and serious DIYers who need accurate, repeatable holes in metal, plastic, and other hard materials. This bit is ideal for use in drill presses, lathes, and handheld drills where precision and durability are essential.

Main features

• DIN 338 standard ensures consistent geometry and performance.
• High-speed steel (HSS) body with titanium nitride (TiN) coating for high hardness and heat resistance up to 600°C.
• Right-hand spiral flute design for efficient chip removal in through-holes.
• 118° point angle suitable for general-purpose drilling in steel, cast iron, non-ferrous metals, and plastics.
• Cylindrical shank with h8 tolerance for secure chuck grip and minimal runout.
• Ground from solid for precise flute geometry and smooth cutting edges.

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: High-speed steel (HSS)
• Coating: Titanium nitride (TiN)
• Diameter: 5.75 mm
• Shank type: Cylindrical
• Shank diameter: 5.75 mm
• Point angle: 118°
• Flute type: Right-hand spiral
• Tolerance: h8
• Overall length: 93 mm
• Working length: 57 mm
• Manufacturing process: Ground from solid
• Colour: Gold (TiN coating)
• Recommended application: Drilling in steel, cast iron, non-ferrous metals, plastics
• Max material hardness: Up to 900 N/mm²
• Heat resistance: Up to 600°C
• Surface finish: Polished flutes
• Chip removal: Excellent
• Durability: High wear resistance, extended tool life

Tips

Use a cutting fluid or lubricant when drilling steel to maximize bit life and hole quality. For best results, start with a center punch or pilot hole to prevent wandering. Store the bit in a dry place to preserve the TiN coating.