Eagle Cutting Tool TDD50-4008S-ALT-D End Mill 1/8 in 4 Flute

Product Description

The EAGLE CUTTING TOOL TDD50-4008S-ALT-D is a solid carbide single-end end mill designed for precision material removal in demanding machining applications. With a 1/8-inch cutting diameter and matching 1/8-inch shank diameter, this tool features a 4-flute geometry and an AlTiN (aluminum titanium nitride) coating applied to the cutting surfaces. The AlTiN coating provides elevated heat resistance and hardness, extending tool life when cutting ferrous and hardened materials at higher speeds. This end mill is manufactured in the USA to tight tolerances suited for close-tolerance milling work.

This end mill is suited for use in vertical machining centers, CNC mills, and manual knee mills where small-diameter profiling, slotting, or contouring is required. The single-end configuration makes it a standard choice for production and job-shop environments machining steel, stainless steel, cast iron, and similar hard materials. The 4-flute design balances chip evacuation with surface finish quality, making it appropriate for finish passes as well as light to moderate roughing cuts in harder workpiece materials.

Key Features

• 1/8-inch cutting diameter with 1/8-inch shank for direct collet or end mill holder mounting
• 4-flute geometry balances chip clearance and finish quality
• AlTiN coating increases surface hardness and thermal resistance for extended tool life
• Solid carbide construction provides rigidity and wear resistance over high-speed tool steel
• Single-end design — standard configuration for general CNC and manual milling use
• Manufactured in the USA for consistent dimensional tolerances

Compatibility

Designed as an OEM-style solid carbide end mill suitable for 1/8-inch collets or end mill holders in standard CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Secure the shank fully within the collet or end mill holder to the manufacturer-recommended engagement depth before tightening. Verify runout with a dial indicator before beginning cuts, as excessive runout accelerates wear on small-diameter carbide tools. Handle carbide end mills carefully — carbide is brittle and can chip if dropped or impacted.

Technical Specifications

• Cutting Diameter: 1/8 inch
• Shank Diameter: 1/8 inch
• Number of Flutes: 4
• Coating: AlTiN (Aluminum Titanium Nitride)
• End Style: Single End
• Substrate: Solid Carbide
• Country of Origin: USA
• Weight: 1.42 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: TDD50-4008S-ALT-D