Industrial TiAlN Coated M35 Cobalt Twist Drill Bits with Bullet Tip

Specification:

Material: M35 Cobalt High Speed Steel (HSS-E, 5% Cobalt)
Tip Type: Bullet Tip / Pilot Point / Turbo Tip (Start on contact, no walking)
Coating: TiAlN (Titanium Aluminum Nitride) – Dark Purple/Black
Manufacturing Process: 100% Fully Ground
Standard: DIN 338, Jobber Length
Hardness: HRC 65-67
Point Angle: 135° Split Point with Pilot Effect
Shank Type: Straight Shank (Tri-Flat Shank available for non-slip grip)
Application: Stainless Steel, Cast Iron, High-Temperature Alloys, Hardened Steel, Aluminum, Wood, Plastics.
Size Range: 1mm – 13mm, 1/16″ – 1/2″ (Custom sizes available)

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Innovative Bullet Tip Design (Pilot Point)

Our M35 Cobalt drill bits feature a specialized Bullet Tip (Step Point) geometry. This advanced design ensures the bit starts drilling immediately on contact without the need for a center punch ("no walking"). It produces cleaner, rounder, and more precise holes with minimal burring, making it ideal for high-precision industrial metalworking.

M35 Cobalt Steel & TiAlN Coating Excellence

Manufactured from premium M35 Cobalt HSS (5% Co), these bits offer superior red-hardness compared to standard M2 bits. The addition of the TiAlN (Titanium Aluminum Nitride) coating provides an ultra-hard surface (up to 3000HV) and exceptional heat resistance (up to 800°C). This combination allows for faster cutting speeds and a service life 5-10 times longer than untreated bits, especially when drilling tough materials like Grade 304/316 stainless steel.

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Optimized for Industrial Productivity

The fully ground flute design ensures rapid chip evacuation, reducing friction and heat buildup during continuous operation. Whether you are using a handheld drill or a CNC machine, our TiAlN coated cobalt bits deliver consistent performance. The 135-degree split point reduces required thrust force, allowing for easier penetration into hardened surfaces.

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B2B Manufacturing & Wholesale Advantage

As a leading professional tool manufacturer, Jiacheng Tools provides stable, high-quality supply chains for global distributors and wholesalers. We offer:
• Custom Branding (OEM): Laser marking and customized packaging.
• Quality Assurance: Strict QC from raw material to final coating.
• Cost-Effectiveness: Factory-direct pricing with industrial-grade performance to help you gain a competitive edge in the hardware and construction markets.