Broca helicoidal RUKO SPB-DIN338-HSS-G-Kreuz 7,3mm

Drilling precise holes in tough materials like steel and cast iron demands a bit that stays sharp, centers accurately, and withstands heat. The RUKO SPB-DIN338-HSS-G-Kreuz 7.3mm twist drill bit solves this with a split point that prevents walking and a ground HSS construction that cuts cleanly.

Who is it for

Professional machinists, metalworkers, and serious DIYers who need reliable, accurate holes in metal, non-ferrous metals, and plastics. If you work with steel, cast iron, or similar materials, this bit is built for your tasks.

Main features

• Split point (Kreuzanschliff) for self-centering and reduced feed pressure
• Ground from solid HSS-G for sharp, durable cutting edges
• DIN 338 standard dimensions: 109 mm overall length, 69 mm flute length
• Right-hand cutting with 135° point angle for efficient drilling
• Cylindrical shank with h8 tolerance for secure chuck grip

Specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-G (High-Speed Steel, Ground)
• Diameter: 7.3 mm
• Point type: Split point
• Point angle: 135°
• Shank type: Cylindrical
• Shank diameter: 7.3 mm
• Overall length: 109 mm
• Flute length: 69 mm
• Tolerance: h8
• Surface finish: Bright
• Cutting direction: Right-hand
• Recommended materials: Steel, cast iron, non-ferrous metals, plastics

Tips

Use a cutting fluid when drilling steel to extend bit life and improve hole quality. For best results, start with a center punch or pilot hole if your workpiece is hard or smooth.