Accupro 12182691 Square End Mill 1/32 in 4 Flute Carbide

Product Description

The ACCUPRO 12182691 is a solid carbide square end mill designed for precision milling in tight geometries and small-feature applications. With a 1/32 inch (0.0313 inch) cutting diameter and a 1/16 inch length of cut, this stub-length tool is built for controlled material removal where rigidity and accuracy matter most. The micrograin carbide construction supports sharp edges and extended tool life across a range of workpiece materials. Four flutes with a 30-degree right-hand spiral helix deliver efficient chip evacuation while maintaining surface finish quality. The center-cutting geometry allows direct plunging, and the uncoated finish suits applications where coating interaction with the workpiece is a concern. Licensed machinists and CNC programmers rely on this tool for detailed work in precision shops.

This end mill is suited for small-diameter milling operations on machining centers, CNC mills, and manual knee mills equipped with appropriate collet systems. Its 1/8 inch shank diameter is compatible with standard ER11 and similar collet chucks. Typical applications include slot milling, profiling, and pocket work in aluminum, brass, plastics, and other non-ferrous or softer ferrous materials where a stub-length, small-diameter tool provides the clearance and rigidity needed for accurate cuts. The 1-1/2 inch overall length keeps deflection minimal at this diameter.

Key Features

• 1/32 inch cutting diameter with a mill diameter tolerance of +0.000 / -0.002 inches for consistent sizing
• Micrograin solid carbide construction for rigidity and edge retention
• 4-flute spiral design with 30-degree helix angle for efficient chip flow
• Center-cutting capable — allows direct plunge entry without pre-drilling
• Right-hand cut, right-hand flute configuration for standard spindle operation
• Stub length (1/16 inch LOC, 1-1/2 inch OAL) minimizes deflection in small-feature work
• Uncoated finish suitable for applications requiring bare carbide contact

Compatibility

Designed as a standard stub-length square end mill for use in CNC machining centers and manual mills with collet systems accepting a 1/8 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Seat the shank fully into a clean, properly sized collet and torque the collet nut to the tool holder manufacturer specification before running. Inspect the cutting edges under magnification before use — carbide at this diameter is brittle and sensitive to handling damage. When programming feeds and speeds, account for the stub-length geometry and small diameter to avoid tool breakage from excessive radial engagement or chip packing.