Accupro 313187 Square End Mill 3/8 in 2 Flute Carbide

Product Description

The ACCUPRO 313187 is a 2-flute solid carbide square end mill designed for precision milling operations in metalworking and machining applications. Built from micrograin carbide, it delivers a 3/8 inch cutting diameter with a 1 inch length of cut and a 45-degree helix angle. The bright/uncoated finish suits a wide range of general-purpose cutting tasks. With a right-hand cutting and flute direction, it is center-cutting capable, allowing plunge entry as well as conventional peripheral and slot milling. Machinists and tool-and-die professionals use this end mill for contouring, profiling, and slotting on CNC machining centers and manual mills.

This end mill is suited for use in job shops, production machining, and toolroom applications. The regular-length geometry and 3/8 inch shank diameter make it compatible with standard ER and straight-bore collet systems. Its micrograin carbide construction handles ferrous and non-ferrous materials, including aluminum, brass, mild steel, and cast iron. The spiral flute design promotes efficient chip evacuation during full-slot and side-milling cuts. It ships as a single-end tool and is intended for setups where consistent dimensional accuracy is critical.

Key Features

• 3/8 inch cutting diameter with tight mill diameter tolerance of +0.000/-0.002 inches
• 2-flute spiral design promotes chip clearance in slotting and profiling operations
• 45-degree helix angle reduces cutting forces and improves surface finish
• Center-cutting geometry allows direct plunge entry without pre-drilling
• Micrograin solid carbide construction provides wear resistance and edge retention
• Right-hand cut and right-hand flute for standard spindle operation

Compatibility

Designed as a general-purpose replacement or production end mill for CNC machining centers and manual knee mills accepting a 3/8 inch straight shank in ER collets or straight-bore tool holders.

Installation Notes

Installation should be performed by a qualified machinist following standard tooling setup procedures. Ensure the machine spindle is fully stopped and locked before inserting or removing the end mill from the collet or tool holder. Verify collet condition and torque the drawbar or nut to the machine manufacturer specifications. Confirm runout with a dial indicator before beginning the first cut to protect both the tool and the workpiece.