Osg 3172016 Square End Mill 0.0394 in 4 Flute Solid Carbide

Product Description

The OSG 3172016 is a solid carbide square end mill designed for precision milling in demanding metal-cutting applications. With a 0.0394-inch cutting diameter and a 0.0591-inch length of cut, this tool is built for fine-detail work and tight-tolerance slots, pockets, and profiles. The 0.1575-inch shank diameter fits standard toolholders for this size class. Four flutes combined with a 35-degree helix angle improve chip evacuation and surface finish. OSG's WXL coating adds wear resistance and heat tolerance, extending tool life in ferrous and non-ferrous materials. A licensed machinist or toolroom technician is the typical installer in CNC or manual milling operations.

This end mill suits precision machining environments including tool-and-die, moldmaking, aerospace component work, and general CNC milling where small-diameter tooling is required. The extended-reach geometry and micrograin carbide substrate make it appropriate for deep-pocket work relative to its diameter. Right-hand cut and right-hand flute direction are standard for conventional CNC milling setups. It is sold as a single unit and is intended for production or toolroom use where tight tolerances and consistent tool geometry are critical.

Key Features

• 0.0394-inch (1 mm) cutting diameter for fine-detail and micro-milling work
• Solid micrograin carbide substrate for rigidity and edge retention
• WXL coating for extended wear resistance and reduced heat buildup
• 4-flute design with 35-degree helix angle for improved chip flow and surface finish
• Center-cutting capable — suitable for plunge entry
• Extended reach geometry for deeper pocket access relative to diameter
• Right-hand cut, right-hand flute for standard CNC milling compatibility

Compatibility

Designed as an OEM-style solid carbide square end mill for use in CNC machining centers and manual milling machines that accept a 0.1575-inch (4 mm) shank diameter toolholder.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Secure the shank in a collet or end mill holder rated for the 0.1575-inch shank diameter and verified for runout before cutting. Power down and lock out the spindle before changing tooling. Do not exceed the manufacturer-recommended speeds and feeds for the workpiece material and coating type.