Kennametal 3866257 Square End Mill 3 Flute Solid Carbide

Product Description

The KENNAMETAL 3866257 is a three-flute, single-end square end mill manufactured from solid carbide in material grade K600. It features a bright, uncoated finish and a right-hand cutting direction with right-hand flute spiral. The 0.5-inch shank diameter provides a secure tool-holder interface for stable cutting performance. Center-cutting geometry allows the tool to plunge directly into the workpiece as well as perform peripheral and face milling operations. This end mill is suited for machinists and toolroom professionals working on CNC mills, manual mills, and machining centers where carbide tooling is specified.

This end mill is designed for general machining applications in ferrous and non-ferrous materials where solid carbide tooling is appropriate. The K600 grade carbide offers a balance of hardness and toughness suited to a range of workpiece materials. Single-end construction means the tool is replaced once the cutting end is worn, making it a straightforward stock item for production and job-shop environments. It is typically used in roughing and finishing passes on vertical and horizontal machining centers.

Key Features

• Solid carbide construction in K600 material grade for rigidity and wear resistance
• Three-flute geometry balances chip evacuation with cutting edge strength
• Center-cutting design allows direct plunge entry into the workpiece
• Right-hand flute direction and right-hand cutting rotation for standard spindle compatibility
• Bright, uncoated finish suitable for applications where coating is not required or where re-grinding is anticipated
• 0.5-inch shank diameter for compatibility with standard ER and side-lock tool holders

Compatibility

Designed as an OEM-style replacement or standard stock end mill for CNC and manual milling machines accepting a 0.5-inch shank diameter tooling interface.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the spindle drive before seating or removing the tool from the holder. Ensure the tool holder bore and shank are clean and free of chips before tightening. Follow the machine tool manufacturer torque and runout specifications for the tool holder type in use.