RUKO LOS-HSSCo-86mm HSS-Co Twist Drill Bit, 3.0 mm, DIN 338, Split Point

The RUKO LOS-HSSCo-86mm stands out with its 5% cobalt alloyed high-speed steel, delivering high heat resistance and durability when drilling stainless and alloyed steels. Its split point geometry ensures self-centering starts without a pilot hole, while the fully ground flutes provide excellent chip evacuation.

Highlights

• HSS-Co (5% cobalt) for high heat resistance
• Split point (135°) for self-centering
• Fully ground from solid for precision
• DIN 338 standard, cylindrical shank
• Diameter 3.0 mm, overall length 86 mm

In daily use

This twist drill bit is suitable for stainless steel, alloyed and unalloyed steel, cast iron, and non-ferrous metals. The bright finish reduces friction and the h8 tolerance ensures consistent hole quality. Use at medium to low speeds for best results.

Full specifications

• Material: HSS-Co (High-Speed Steel Cobalt)
• Diameter: 3.0 mm
• Overall Length: 86 mm
• Working Length (Flute Length): 49 mm
• Standard: DIN 338
• Shank Type: Cylindrical
• Point Angle: 135°
• Point Type: Split Point (Cross-ground)
• Coating: Uncoated (Bright finish)
• Manufacturing Process: Fully Ground
• Tolerance: h8
• Cobalt Content: 5%
• Heat Resistance: Very High
• Self-Centering: Yes
• Chip Evacuation: Excellent
• Recommended Speed: Medium to Low
• Packaging: Single piece

Final note

A professional-grade cobalt drill bit for demanding metalworking tasks.