RUKO SPB-DIN338-HSSCo8-Ø4.3mm HSS-Co 8% Cobalt Twist Drill Bit, DIN 338, Split Point, 4.3 mm

The RUKO SPB-DIN338-HSSCo8-Ø4.3mm stands out with its 8% cobalt alloyed high-speed steel, delivering high heat and wear resistance for demanding drilling in tough materials. Its split point grind ensures self-centering and reduces walking, while the fully ground flutes promote efficient chip evacuation.

Highlights

• 8% cobalt high-speed steel (HSS-Co) for high heat resistance
• Split point (cross-ground) tip for precise self-centering
• DIN 338 standard with 130° point angle
• Fully ground bright finish for smooth cutting
• Suitable for stainless, acid-resistant, and heat-resistant steels

In daily use

This twist drill bit is engineered for industrial and professional applications where accuracy and durability are critical. The cylindrical shank fits standard drill chucks, and the h8 tolerance ensures a precise hole diameter. The right-hand cutting direction matches conventional drilling.

Full specifications

• Drill bit type: Twist drill bit
• Material: High-speed steel with 8% cobalt (HSS-Co)
• Standard: DIN 338
• Diameter: 4.3 mm
• Total length: 80 mm
• Working length (flute length): 47 mm
• Shank type: Cylindrical
• Point angle: 130°
• Point grind: Split point (cross-ground)
• Surface finish: Bright / polished
• Manufacturing process: Fully ground
• Tolerance: h8
• Cutting direction: Right-hand cutting
• Recommended materials: Stainless steel, acid-resistant steel, heat-resistant steel, high-alloy steels, cast iron, non-ferrous metals

Final note

RUKO's SPB-DIN338-HSSCo8 series is trusted by professionals for its consistent performance in challenging materials. This 4.3 mm bit is a reliable choice for precise, clean holes.