Osg 403-3937 Square End Mill 0.3937 in 3 Flute Carbide

Product Description

The OSG 403-3937 is a solid carbide square end mill designed for precise milling operations in ferrous and non-ferrous materials. It features a 0.3937-inch (10 mm) mill diameter, a 0.9843-inch (25 mm) length of cut, and three spiral flutes with a 30-degree helix angle. The square end geometry delivers sharp, defined edge profiles on slots, pockets, and peripheral cuts. Solid carbide construction provides rigidity and heat resistance suitable for high-feed applications in production and job-shop environments. Licensed machinists and CNC operators working with precision components will find this end mill fits standard toolholders and collet chucks without modification.

This end mill is suited for use on CNC machining centers and manual mills where a regular-length tool is appropriate. The center-cutting design allows plunge entry as well as conventional and climb milling. Right-hand cut and right-hand flute orientation follow industry-standard configurations. The uncoated finish makes it a straightforward choice for applications where a base carbide tool is preferred, including aluminum, brass, and mild steel stock removal or finishing passes.

Key Features

• 0.3937-inch (10 mm) mill diameter with 0.9843-inch (25 mm) length of cut
• 3 spiral flutes with 30-degree helix angle for efficient chip evacuation
• Solid carbide construction for rigidity and durability at elevated feed rates
• Center-cutting geometry permits direct plunge entry into workpiece
• Right-hand cut, right-hand flute — standard orientation for most CNC setups
• Regular-length series suitable for most general-purpose milling applications
• Uncoated finish — compatible with a wide range of workpiece materials

Compatibility

Designed as an OEM-style solid carbide square end mill in the OSG Series 403 line, compatible with standard 10 mm collet chucks and toolholders used on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Secure the end mill in a properly sized collet or end mill holder and torque to the toolholder manufacturer's specification. Confirm runout with a dial indicator before beginning a cut. Always power down and lock out the spindle before changing tooling, and verify that the tool clearance path is free of fixturing or clamps before initiating a program cycle.