Accupro 12183406 Square End Mill 9/32 in 4 Flute Carbide

Product Description

The ACCUPRO 12183406 is a solid carbide square end mill designed for precision milling operations across a wide range of ferrous and non-ferrous materials. It features a 9/32 inch (0.2812 inch) cutting diameter, a 1-1/4 inch length of cut, and a 5/16 inch shank diameter, with an overall length of 3 inches. The micrograin carbide substrate provides hardness and edge retention, while the TiCN coating adds surface hardness and lubricity to reduce heat buildup at the cutting edge. The 40-degree helix angle promotes efficient chip evacuation during cutting. Classified as an extra-long length type, this end mill suits setups requiring additional reach into deep pockets or stepped features.

This end mill is suited for machining operations where tight tolerances and clean finishes are required. It is centercutting, allowing direct plunge entry into the workpiece. Right-hand cut and right-hand spiral flute geometry make it compatible with standard CNC machining centers and manual mills running conventional spindle rotation. Machinists working on tool and die, mold making, aerospace components, and general metalworking will find the four-flute configuration appropriate for finishing passes and light-to-moderate roughing in harder materials. The spiral flute design supports continuous chip flow away from the cutting zone.

Key Features

• Solid micrograin carbide construction for high hardness and wear resistance
• TiCN coating reduces friction and extends tool life in ferrous materials
• 40-degree helix angle improves chip evacuation and cutting efficiency
• Centercutting design allows direct plunge and ramp entry
• Right-hand cut, right-hand spiral flute for use on standard spindle-direction equipment
• Extra-long length type provides reach for deeper pocket and step milling applications

Compatibility

Designed as an OEM-style replacement or direct-use solid carbide square end mill compatible with standard ER collet systems, end mill holders, and shrink-fit toolholders accepting a 5/16 inch shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the shank fully into the holder to the minimum engagement depth recommended by the toolholder manufacturer. Verify runout with a dial indicator after clamping, as excessive runout will reduce tool life and surface finish quality. Do not exceed the tool manufacturer recommended speeds and feeds for the workpiece material and depth of cut.