DIN338 DLC Industrial Coating HSS Cobalt Drill Bits

Premium M35 HSS with 5% Cobalt Content

• Superior Red Hardness: Maintains exceptional cutting edge hardness and sharpness even at extreme high temperatures generated during continuous high-speed drilling, eliminating edge softening and premature wear.
• Enhanced Wear & Impact Resistance: Delivers 2-3x longer service life than standard HSS drill bits, with excellent toughness to reduce breakage risk in interrupted cutting and heavy-duty operations.
• Cost-Effective High Performance: Offers near-M42 grade drilling stability at a more competitive price point, making it ideal for bulk industrial use and high-volume production.

Industrial-Grade Rainbow DLC (Diamond-Like Carbon) Coating

• Ultra-Low Friction & Anti-Bonding Performance: The diamond-like structure creates an ultra-smooth, low-friction surface that prevents chip adhesion on sticky non-ferrous metals (aluminum, copper, brass), ensuring unobstructed chip evacuation and eliminating hole wall scratches or drill breakage from chip clogging.
• Extreme Hardness & Wear Resistance: With surface hardness close to diamond, the DLC coating extends tool life by over 50% compared to standard TiN-coated drill bits, drastically reducing tool replacement frequency.
• Excellent Corrosion & Oxidation Resistance: The full-coverage rainbow coating isolates the base material from air and moisture, preventing rust and oxidation, and extending shelf and service life in harsh workshop and storage environments.
• Low Thermal Conductivity: Minimizes cutting heat transfer to the drill bit substrate, protecting the cutting edge from thermal fatigue and maintaining stable performance in high-speed continuous drilling.

Strict DIN338 Industrial Standard Compliance

Fully Ground CNC Manufacturing

• Ultra-tight concentricity and minimal radial runout, delivering perfectly straight, round, burr-free holes with zero deviation
• Consistent batch-to-batch performance, critical for automated production lines to reduce scrap rates and unplanned downtime
• Optimized cutting edge geometry for reduced cutting thrust and smoother penetration

Optimized Drilling Geometry

• 135° Self-Centering Split Point: Eliminates the need for pre-drilling or center punching, prevents drill wander, ensures precise hole placement, and reduces cutting stress on the bit and equipment.
• 30° Type N Helical Flute: Balances optimal chip evacuation efficiency and structural rigidity, ensuring smooth chip removal even in deep-hole drilling, while reducing vibration and cutting resistance.
• Universal Round Straight Shank: Fits all standard 3-jaw drill chucks, making it suitable for both manual and automated industrial drilling environments.

Metric size

Imperial size