Broca helicoidal RUKO DIN 338 HSS-G com afiação em cruz 7,2 mm

Drilling precise holes in metal can be frustrating when the bit wanders or requires excessive pressure. The RUKO SPB-DIN338-HSS-G-Kreuz-7,2mm twist drill bit solves this with a split point tip that self-centers and reduces walking, ensuring accurate starts without a center punch.

Who is it for

Metalworkers, machinists, and serious DIYers who need reliable, precision-ground drill bits for steel, cast iron, non-ferrous metals, plastics, and wood.

Main features

• Split point (Kreuzanschliff) with 135° point angle for self-centering and reduced walking
• Made from high-speed steel, ground (HSS-G) for durability and sharpness
• DIN 338 standard dimensions: 7.2 mm diameter, 109 mm overall length, 69 mm flute length
• Cylindrical shank with h8 tolerance for secure chuck grip
• Bright finish for corrosion resistance and smooth chip flow
• Right-hand cutting direction for standard drilling

Specifications

• Drill bit type: Twist drill bit
• Material: HSS-G (high-speed steel, ground)
• Standard: DIN 338
• Drill diameter: 7.2 mm
• Shank type: Cylindrical
• Shank diameter: 7.2 mm
• Point type: Split point
• Point angle: 135°
• Overall length: 109 mm
• Flute length: 69 mm
• Surface treatment: Bright
• Manufacturing process: Precision ground
• Tolerance class: h8
• Cutting direction: Right-hand

Tips

Use cutting fluid when drilling steel to extend bit life. For deep holes, withdraw the bit periodically to clear chips.