Accupro 12277031 Square End Mill 0.022 in 4 Flute Carbide

Product Description

The ACCUPRO 12277031 is a solid carbide square end mill designed for precision milling operations in tight-tolerance applications. With a 0.022-inch mill diameter and a 0.033-inch length of cut, this tool is built for micro-machining work where dimensional accuracy is critical. The four-flute, right-hand spiral geometry with a 30-degree helix angle promotes efficient chip evacuation and stable cutting performance. Manufactured from micrograin carbide, it delivers the rigidity and edge retention required for demanding cuts in ferrous and non-ferrous materials. This is a single-end, centercutting tool with a bright/uncoated finish, suited for machinists and tool-and-die professionals running CNC mills or manual machining centers.

This end mill is used in precision machining environments where small-diameter tooling is required — typically mold making, die work, engraving, and fine detail cutting in production or job shop settings. The 0.125-inch shank diameter and 1.5-inch overall length make it compatible with standard collets and end mill holders used in vertical machining centers and mini mills. Its centercutting capability allows for plunge milling as well as conventional and climb milling passes.

Key Features

• 0.022-inch mill diameter with micrograin solid carbide construction for edge stability in micro-machining
• 4-flute, right-hand spiral flute design with 30-degree helix for efficient chip flow
• Centercutting geometry supports plunge entry without a pre-drilled pilot hole
• Bright/uncoated finish suitable for use with or without coolant in a wide range of materials
• Single-end configuration with 0.033-inch length of cut and 1.5-inch overall length
• Mill diameter tolerance of +0.0000/-0.0010 inches for precise slot and profile work

Compatibility

Designed for use with standard 0.125-inch (1/8-inch) collets and end mill holders. Part of the ACCUPRO ASQSC4-CC-30H series of solid carbide square end mills.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout. Ensure the spindle and collet are clean and free of debris before seating the shank. Verify proper collet torque according to the toolholder manufacturer specification before beginning any cut. At this diameter, minimize overhang and confirm runout with a dial indicator before production cuts to prevent premature tool breakage.