RUKO DIN 338 HSS-G σπειροειδές τρυπάνι 7,9 mm Split Point

For metalworkers and maintenance technicians drilling precise holes in steel, cast steel, non-ferrous metals, plastics, and wood, this RUKO DIN 338 twist drill bit delivers reliable performance. The 7.9 mm diameter with split point geometry centres accurately without wandering, while the precision-ground HSS-G construction ensures clean cutting edges.

Key specifications

• Drill bit type: Twist drill bit
• Material: HSS-G (high-speed steel, ground)
• Standard: DIN 338
• Diameter: 7.9 mm
• Total length: 117 mm
• Working length: 75 mm
• Point angle: 118°
• Point type: Split point (self-centering)
• Shank type: Cylindrical
• Shank diameter: 7.9 mm
• Tolerance class: h8
• Surface finish: Bright (uncoated)
• Manufacturing process: Precision ground
• Cutting direction: Right-hand
• Number of flutes: 2
• Suitable materials: Steel, cast steel, non-ferrous metals, plastics, wood

Why choose it

The split point tip eliminates the need for centre punching, saving time in production environments. Ground flutes provide excellent chip evacuation and reduced cutting forces, extending tool life. The bright finish offers good corrosion resistance when properly stored.

Ideal use cases

• Drilling precise holes in steel and cast steel components
• Maintenance and repair work on machinery
• Fabrication with non-ferrous metals and plastics
• Woodworking where clean entry holes are required

Good to know

Manufactured to DIN 338 standards, this drill bit fits standard drill chucks with its cylindrical shank. The h8 tolerance ensures consistent diameter for accurate hole sizing. For best results, use appropriate cutting speeds and lubrication when drilling metals.