RUKO SPB-DIN338-HSS-TiN-Ø12,4mm Broca helicoidal

For machinists and metalworkers who need a precise, durable drill bit for everyday drilling in steel and other metals, the RUKO SPB-DIN338-HSS-TiN Ø12.4 mm twist drill bit delivers reliable performance. Its titanium nitride coating reduces friction and extends tool life, making it a solid choice for workshop and production environments.

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: High-speed steel (HSS)
• Coating: Titanium nitride (TiN)
• Diameter: 12.4 mm
• Overall length: 151 mm
• Working length: 101 mm
• Shank type: Cylindrical
• Shank diameter: 12.4 mm
• Point angle: 135°
• Cutting direction: Right-hand cut
• Tolerance: h8
• Manufacturing process: Fully ground
• Application: General purpose drilling in steel, cast iron, non-ferrous metals, plastics, wood
• Recommended material hardness: Up to 900 N/mm²

Why choose it

The TiN coating provides a hard, low-friction surface that improves chip flow and reduces heat buildup, helping the bit stay sharp longer than uncoated HSS bits. The fully ground flute geometry ensures accurate hole sizing and clean cutting edges, while the 135° split point reduces walking and allows faster penetration.

Ideal use cases

• Drilling precise holes in steel plates, profiles, and pipes
• Maintenance and repair work in workshops
• Fabrication of metal components
• Occasional drilling in wood and plastics

Good to know

This drill bit conforms to DIN 338, the standard for short series twist drills, ensuring compatibility with standard drill chucks and tool holders. It is suitable for use with stationary drilling machines and hand-held drills with adequate power.