Accupro 12183405 Square End Mill 9/32 in 4 Flute Carbide

Product Description

The ACCUPRO 12183405 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. It features a 9/32 inch (0.2813 inch) cutting diameter, a 1-1/4 inch length of cut, and a 3 inch overall length, placing it in the extra long category for extended reach applications. The 5/16 inch shank diameter fits standard collet and end mill holders. With 4 spiral flutes at a 40-degree helix angle and a micrograin carbide substrate, this tool delivers clean material removal in a right-hand cut, right-hand flute configuration. It is centercutting, allowing direct plunge entry. Machinists, CNC operators, and tool-and-die professionals are the primary users.

This end mill suits ferrous and non-ferrous milling applications where a longer reach is required to access deep pockets, slots, or stepped features. The extra long length type and 1-1/4 inch length of cut make it well suited for cavity work and profiling passes where a standard-length tool would not reach. The uncoated micrograin carbide construction is appropriate for applications where coolant is used or where the material being cut does not require a specialized coating for extended tool life.

Key Features

• 9/32 inch cutting diameter with a mill diameter tolerance of +0.000 / -0.002 inches for consistent fit
• Solid micrograin carbide construction for rigidity and wear resistance
• 4 spiral flutes at a 40-degree helix angle for efficient chip evacuation
• Centercutting geometry allows direct plunge milling without a pre-drilled entry hole
• Right-hand cut, right-hand flute configuration for standard spindle rotation
• Extra long length type with 3 inch OAL for deep-reach milling applications

Compatibility

Designed as a direct-fit replacement or standard tooling selection for CNC machining centers and manual mills using 5/16 inch collets or end mill holders with a shank diameter tolerance of -0.0001 / -0.0004 inches.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully into the collet or holder and torque to the tool holder manufacturer's specification. Verify runout with a dial indicator before beginning a cut, particularly given the extra long length, which increases deflection sensitivity at higher depths of cut.