Accupro 12183687 Square End Mill 3/8 in 4 Flute Solid Carbide

Product Description

The ACCUPRO 12183687 is a solid carbide square end mill designed for precision milling operations in metal, composites, and other hard materials. It features a 3/8 inch cutting diameter, a 1-1/2 inch length of cut, and a 6 inch overall length that puts it in the extra-long category — useful when reach is a factor in deep-pocket or long-reach setups. The 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. With four flutes and a spiral flute geometry, it delivers a balance of material removal rate and surface finish quality. Machinists and tool-and-die professionals are the primary users.

This end mill is suited for ferrous and non-ferrous machining applications where a standard-reach tool cannot reach the workpiece. The extra-long overall length of 6 inches makes it applicable in mold work, deep-cavity milling, and setups requiring extended tool projection. The centercutting design allows plunge entry directly into the workpiece without a pre-drilled hole. Right-hand cut and right-hand flute configuration is standard for conventional CNC and manual milling machine spindles. The uncoated micrograin carbide substrate is appropriate for dry or wet machining where a coated tool is not specified.

Key Features

• Solid micrograin carbide construction for rigidity and edge retention in demanding cuts
• 40-degree helix angle promotes chip evacuation and reduces heat buildup at the cutting edge
• Centercutting geometry allows direct plunge entry without pre-drilling
• Extra-long 6 inch OAL provides reach for deep-cavity and long-projection setups
• Four-flute spiral design balances material removal rate with surface finish quality
• Right-hand cut and right-hand flute for standard CNC and manual milling spindle compatibility

Compatibility

Designed as a standard 3/8 inch shank end mill for use in collet chucks, end mill holders, and milling chucks accepting 3/8 inch shank tooling on CNC machining centers and manual vertical mills.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's tool-holding specifications. Ensure the spindle is fully stopped and the machine is in a safe state before loading or unloading the tool. Verify runout at the tool tip after clamping, as extra-long tools are more sensitive to runout-induced deflection and premature wear. Consult the machine tool's programming or operations manual for recommended feeds and speeds appropriate to the workpiece material and depth of cut.