RUKO SPB-DIN338-6,9mm HSSCo σπειροειδές τρυπάνι

The RUKO SPB-DIN338-6.9mm HSSCo twist drill bit is engineered for demanding metalworking tasks, featuring a 5% cobalt high-speed steel construction that delivers high heat resistance and durability. Its split point grind (DIN 1412 C) ensures self-centering and precise drilling without wandering, while the 130° point angle optimizes cutting performance in tough materials.

Highlights

• 5% cobalt HSS-Co material for high heat resistance and extended tool life
• Split point grind (DIN 1412 C) for self-centering and accurate hole placement
• Fully ground with bright finish for smooth chip evacuation and reduced friction
• Conforms to DIN 338 standard for reliable twist drill geometry
• Suitable for high-alloy steels, stainless steel, acid-resistant steel, cast iron, bronze, and plastics

In daily use

This drill bit excels in industrial drilling applications where precision and longevity are critical. The cylindrical shank fits standard drill chucks, and the right-hand cutting direction matches most drilling machines. Its excellent chip removal keeps the cutting edge cool and prevents clogging, even in deep holes.

Full specifications

• Drill Bit Type: Twist Drill Bit
• Material: HSS-Co (High-Speed Steel with Cobalt)
• Cobalt Content: 5%
• Standard: DIN 338
• Drill Diameter: 6.9 mm
• Total Length (l1): 109 mm
• Working Length (l2): 69 mm
• Shank Type: Cylindrical
• Point Angle: 130°
• Point Grind: Split Point (DIN 1412 C)
• Surface Finish: Bright
• Manufacturing Process: Fully Ground
• Cutting Direction: Right-hand cutting
• Tolerance: h8
• Recommended Materials: High-alloy steels, Stainless steel, Acid-resistant steel, Cast iron, Bronze, Plastics
• Application: Industrial drilling, Metalworking
• Heat Resistance: High
• Self-Centering: Yes
• Chip Removal: Excellent
• Packaging: Single piece

Final note

With its cobalt alloy and split point design, this RUKO drill bit delivers dependable performance in challenging materials, making it a solid choice for professional workshops and serious DIY users.