Accupro 12276831 Square End Mill 0.054 in 4 Flute Carbide

Product Description

The ACCUPRO 12276831 is a 4-flute solid carbide square end mill designed for precision milling operations in metalworking and machining applications. With a 0.054-inch cutting diameter and a 0.162-inch length of cut, this tool is built for small-feature work requiring tight tolerances and consistent chip evacuation. The micrograin carbide construction delivers hardness and wear resistance suited for ferrous and non-ferrous materials. A 30-degree helix angle promotes smooth cutting action and reduces deflection at this diameter. The bright, uncoated finish makes it well suited for non-ferrous metals, plastics, and other materials where coating adhesion is not required. Machinists and CNC operators handling fine-detail work will find this tool a reliable fit for high-precision applications.

This end mill is used in CNC machining centers, knee mills, and toolroom setups where small-diameter, tight-tolerance cuts are required. It is a single-end tool with right-hand cutting and right-hand flute direction, standard for most vertical milling setups. The 1/8-inch shank diameter allows it to seat in standard collets and end mill holders commonly found in toolroom and production environments. The 1.5-inch overall length keeps the tool rigid, helping minimize runout in delicate profiling and slotting operations. This is a trade tool for skilled machinists and CNC programmers working in job shops, aerospace, medical device, or general precision manufacturing.

Key Features

• 0.054-inch cutting diameter with mill diameter tolerance of +0.0000 / -0.0010 inches for precise fitment
• 4 spiral flutes with 30-degree helix angle for efficient chip evacuation and smooth cut finish
• Micrograin solid carbide construction for hardness and extended tool life
• Centercutting design allows plunge entry directly into workpiece material
• Bright, uncoated finish suited for non-ferrous metals, plastics, and composites
• Right-hand cut and right-hand flute direction, compatible with standard CNC and manual mill setups

Compatibility

Designed for use in standard 1/8-inch collets and end mill holders on CNC machining centers and manual vertical mills. Compatible with applications within the 0.100 to 0.200-inch length of cut range.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the 1/8-inch shank fully into the collet or holder and torque the retention hardware according to the toolholder manufacturer specifications. Inspect the tool for runout with a dial indicator before beginning a cut, particularly given the small diameter, which amplifies the effects of runout on tool life and part accuracy.