Accupro 12378441 Square End Mill 1/16 in 4 Flute Carbide

Product Description

The ACCUPRO 12378441 is a 4-flute solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. Built from micrograin carbide, it delivers hardness and edge retention in a compact 1/16 inch (0.0625 inch) diameter profile. The 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. With a bright/uncoated finish, this end mill suits applications where coating buildup tolerance is not required. It is a single-end tool with right-hand cutting and right-hand flute direction, sized for tight-tolerance work in prototype shops, tool rooms, and production machining environments.

This end mill is suited for small-feature milling operations including slots, pockets, and contour paths in aluminum, brass, mild steel, and similar materials. The 3/16 inch length of cut and 1-1/2 inch overall length make it appropriate for shallow-depth passes in die work, mold machining, and precision part fabrication. It is centercutting, allowing direct plunge entry. Machinists and CNC operators running small-diameter toolpaths on vertical machining centers or CNC routers will find this tool applicable to fine detail work.

Key Features

• Micrograin solid carbide construction for hardness and edge retention
• 4-flute spiral design with 30-degree helix for efficient chip flow
• Centercutting geometry allows direct plunge milling
• Bright/uncoated finish suitable for non-ferrous and general-purpose applications
• Right-hand cut and right-hand flute direction
• Single-end configuration with close mill diameter tolerance of +0.0000/-0.0010 inches

Compatibility

Designed as an OEM-style replacement or standard tooling option for CNC machining centers and manual mills accepting a 1/8 inch shank diameter collet or tool holder.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and locked out before changing tooling. Seat the 1/8 inch shank fully into a collet or end mill holder and torque to the tool holder specification. Verify runout with a dial indicator before engaging the workpiece, as small-diameter carbide end mills are sensitive to runout and may fracture under side load if improperly seated.