Wholesale 65° HRC Nano Blue Coated 4-Flute Solid Carbide End Mills | Factory Direct CNC Tools

Looking for a reliable supply of high-performance cutting tools? Our Premium 65° HRC Nano Blue Coated 4-Flute Solid Carbide End Mills are engineered for heavy-duty industrial machining, specifically targeting hardened steel (HRC 60~65) and stainless steel. As a trusted factory-direct supplier, we offer global distributors and wholesalers stable quality, high profit margins, and robust OEM/ODM capabilities.

• Factory-Direct Pricing & High Margins: Eliminate middlemen. Get competitive wholesale pricing that maximizes your market competitiveness and profit margins.
• Mass Production Consistency: Precision grinded shanks with h5 tolerance ensure near-zero run-out. Deliver impeccable dimensional stability to your clients for automated batch production.
• Unrivaled Tool Longevity: Our advanced Nano Blue-Violet (TiAlN) coating withstands temperatures up to 1000°C, increasing tool life by 50%+ compared to standard coatings. Fewer customer complaints for you.
• Reduced Stock Risk (All-in-One Tool): This single end mill processes quenched steel, stainless steel, and alloy steel. Help your clients reduce their tool inventory, leading to faster stock turnover for you.
• Stable Supply & Fast Shipping: Full range of standard sizes (1mm to 20mm) always in stock. Ready to ship to meet your urgent market demands.

• Substrate: Micro-Grain Solid Carbide (High Cobalt Tungsten Carbide)
• Hardness Range: Ideal for HRC 60 ~ HRC 65 Heat-Treated Steels
• Coating Technology: Nano Blue-Violet Passivation Coating
• Geometry: 4-Flute, High Helix Angle Design (Smooth chip evacuation, no chatter)
• Application: CNC Milling Machines, High-Speed Machining (HSM) Centers
• Applicable Materials: Quenched Steel, Stainless Steel, Die Steel, Alloy Steel

• Laser Marking: Custom logo and specification branding on the shank.
• Custom Packaging: Private label packaging (plastic tubes, boxes, inserts) available.
• Custom Dimensions: Non-standard sizes and custom geometries tailored to your local market needs.
• Flexible MOQ: Low minimum order quantities for initial trial orders to test quality.

1. Speed Optimization: Properly reducing cutting speed and feed rate significantly extends tool life.
2. Coolant Required: Continuous cutting fluid is highly recommended for stainless steel to ensure flawless surface finishes.
3. Climb Milling: Use climb milling  to effectively clear hardened crusts or surface oxidation layers.