3-Point 90° HSS Cobalt (HSSCo) Countersink Bit – Titanium Nitride (TiN) Coated, Deburring & Chamfering Tool for Hard Metals

Short Description (for search results & listing summaries):
Upgrade your metalworking toolkit with this professional-grade 3-point countersink. Made from HSS Cobalt (HSSCo) with a wear-resistant Titanium Nitride (TiN) coating, this 90° tool delivers chatter-free countersinking, deburring, and chamfering in stainless steel, cast iron, and other tough alloys.

Key Features (Bullet Points – Ideal for "Product Features" section):

• ✅ PRECISE 90° ANGLE: Designed for standard metric and inch fasteners; creates clean, uniform chamfers for flat-head screws, rivets, and dowels.

• 🔧 3-POINT CUTTING DESIGN: The three-flute geometry significantly reduces vibration and "chatter" compared to single or double flute countersinks, providing smoother cuts and longer tool life.

• ⭐ HSS COBALT (HSSCo): High-Speed Steel with Cobalt content retains hardness at elevated temperatures, making it ideal for drilling and countersinking heat-resistant materials like stainless steel, Inconel, and titanium.

• 🟡 TIN COATED (Titanium Nitride): The gold-colored TiN layer reduces friction, prevents material build-up (galling), and increases surface hardness up to 85 HRC. Resists wear and extends tool life by 3-6x over uncoated HSS.

• 🪚 MULTI-MATERIAL USE: Works exceptionally well on steel, stainless steel, aluminum, brass, copper, cast iron, and even hard plastics and wood.

Full Product Description (Detailed Body Text):

Professional 3-Point 90° Countersink – Engineered for Hard Materials

Stop struggling with chattering, oversized holes, and dull tools. This 3-Point, 90° Countersink is engineered for machinists, fabricators, and DIY professionals who demand clean, accurate chamfers every time.

Why Choose the 3-Point Design?
Unlike traditional single-flute countersinks that can grab and wobble, our 3-point design provides exceptional stability. The three evenly spaced cutting edges self-center into the pilot hole, eliminating vibration and leaving a smooth, burr-free finish. This design also allows for faster feed rates without compromising surface quality.

Superior Material: HSS with Cobalt (HSSCo)
Standard HSS tools lose their edge quickly when used on tough materials. By adding Cobalt, this countersink remains sharp and effective even at high speeds and temperatures. It is the go-to choice for stainless steel, nickel alloys, and abrasive metals.

Advanced TiN Coating
The Titanium Nitride coating isn't just for looks—it's a performance layer. It reduces friction so chips slide out easily, prevents galling on aluminum and soft metals, and provides a thermal barrier that keeps the cutting edge cooler. The result: faster speeds, cleaner holes, and up to 4x longer tool life.

Common Applications:

• Deburring drilled holes in metal fabrication.

• Countersinking for socket head and flat head cap screws.

• Chamfering pipe and rod edges.

• Removing weld slag and sharp edges from machined parts.

Technical Specifications:

• Material: HSS Cobalt (HSSCo, M35 or equivalent)

• Coating: Titanium Nitride (TiN)

• Angle: 90 Degree

• Cutting Type: 3-Point (3 Flute)

• Compatible Materials: Stainless steel, carbon steel, tool steel, aluminum, brass, bronze, titanium, cast iron, hard plastics, wood.

Package Includes:

• 1 x 3-Point 90° TiN Coated Cobalt Countersink

• *[Optional: Add "Shank diameter (e.g., 1/4" or 6.35mm)" based on your specific product]*

Specifications Table (For tech-savvy buyers):