Accupro 12276877 Square End Mill 0.1in 4 Flute Carbide

Product Description

The ACCUPRO 12276877 is a single-end, square-profile solid carbide end mill designed for precision milling operations in metalworking and machining applications. With a 0.1-inch cutting diameter and a 30-degree helix angle, it delivers clean, accurate cuts in a variety of ferrous and non-ferrous materials. The micrograin carbide construction provides superior hardness and edge retention compared to high-speed steel tooling. Four right-hand spiral flutes combined with a center-cutting design allow for both plunge and peripheral milling. The bright, uncoated finish suits applications where coating buildup or heat transfer is a concern. This tool is installed and operated by machinists and tool-and-die professionals in CNC and manual milling environments.

This end mill is suited for light-duty precision slot milling, profiling, and pocketing in small-diameter applications. The 1/8-inch shank diameter fits standard collet systems used in CNC machining centers, manual knee mills, and precision die-sinking setups. The regular-length geometry and 19/64-inch length of cut keep tool deflection minimal, making it a practical choice for tight-tolerance work in production or toolroom settings. It is a single-piece, single-end tool — once the cutting end is worn, the tool is replaced rather than reground in most production contexts.

Key Features

• 0.1-inch cutting diameter with a mill diameter tolerance of +0.0000 / -0.0010 inches for consistent sizing
• Micrograin solid carbide construction for extended edge life and rigidity
• 4 right-hand spiral flutes with a 30-degree helix angle for efficient chip evacuation
• Center-cutting design enables direct plunge entry without a pre-drilled hole
• Bright / uncoated finish — no coating delamination risk on sensitive materials
• 1/8-inch shank with a shank diameter tolerance of -0.0001 / -0.0003 inches for secure collet grip

Compatibility

Designed as an OEM-style replacement or direct-fit tooling option for standard 1/8-inch collet systems used in CNC machining centers and manual milling machines requiring small-diameter square end mills.

Installation Notes

Installation is performed by qualified machinists using appropriate collet toolholders rated for the 1/8-inch shank diameter. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Verify collet runout with a dial indicator before production use, as runout at small diameters accelerates wear and can cause premature tool breakage. Feeds, speeds, and depth-of-cut parameters should be selected based on workpiece material and machine rigidity — consult the manufacturer's machining data for guidance.