RUKO SPB-DIN338 11,4mm valssattu spiraalipora HSS-G hiottu

Precision drilling in tough metals demands a bit that stays sharp and centered. The RUKO SPB-DIN338 11.4 mm twist drill bit is ground from high-speed steel (HSS-G) to DIN 338, delivering clean, accurate holes in steel, cast iron, and non-ferrous alloys. Its rolled flute profile and 118° point angle bite reliably without wandering, making it a dependable choice for workshops and maintenance tasks.

Who is it for

Machinists, metalworkers, and serious DIYers who need a single, robust drill bit for everyday metal drilling. If you work with steel, cast steel, grey cast iron, or plastics, this bit handles the job without frequent resharpening.

Main features

• Ground HSS-G construction for hardness and wear resistance
• DIN 338 standard ensures consistent geometry and compatibility
• 118° point angle for efficient cutting and self-centering
• Bright, uncoated finish reduces friction and heat build-up
• Right-hand cutting direction for standard drill rotation

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-G (high-speed steel, ground)
• Diameter: 11.4 mm
• Shank type: Cylindrical
• Shank diameter: 11.4 mm
• Overall length (l1): 142 mm
• Flute length (l2): 101 mm
• Point angle: 118°
• Manufacturing process: Ground
• Surface finish: Bright (uncoated)
• Tolerance: h8
• Cutting direction: Right-hand cutting
• Recommended applications: Steel, cast steel, alloyed/non-alloyed materials, grey cast iron, malleable cast iron, sintered iron, nickel silver, graphite, non-ferrous metals, plastics

Tips

Use a cutting fluid or lubricant when drilling steel to extend bit life and improve hole quality. For deep holes, withdraw the bit periodically to clear chips. Store in a dry place to prevent corrosion.