Osg 403-6299 Square End Mill 0.6299 in 3 Flute Carbide

Product Description

The OSG 403-6299 is a solid carbide square end mill designed for precision milling operations in metalworking and machining environments. Built to Series 403 specifications, this tool features a 0.6299 inch cutting diameter, a 1.2598 inch length of cut, and a 3-flute configuration with a 30-degree spiral helix angle. The micrograin carbide construction delivers the hardness and wear resistance required for demanding cut conditions. This end mill is center-cutting and runs a right-hand cut with right-hand flute direction, making it suitable for standard CNC and manual milling setups. It ships in a bright, uncoated finish.

The OSG 403-6299 is suited for general-purpose milling applications including slotting, profiling, and peripheral milling in ferrous and non-ferrous materials. The 0.6299 inch shank diameter matches the cutting diameter for a rigid, straight-shank setup in standard collet or end mill holders. The regular-length body and 89 mm overall length make it appropriate for typical knee mill and CNC machining center work where extended reach is not required. Machinists, tool-and-die makers, and CNC operators in job shops and production environments are the primary users.

Key Features

• 0.6299 inch cutting diameter with matching 0.6299 inch shank diameter for direct collet mounting
• 3-flute spiral design with 30-degree helix angle for balanced chip evacuation and surface finish
• Micrograin solid carbide construction for hardness and extended tool life
• Center-cutting geometry allows plunge and ramp entry
• Right-hand cut, right-hand flute direction for standard spindle compatibility
• Bright uncoated finish; suitable for dry or wet cutting depending on material and shop practice

Compatibility

Designed as an OEM-style solid carbide square end mill in the OSG Series 403 line, compatible with standard 0.6299 inch (16 mm) end mill holders, collet chucks, and milling machine spindles accepting that shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before inserting or removing any tooling. Seat the shank fully into the holder to the recommended gauge line and torque the retention hardware per the toolholder manufacturer's specification. Inspect the cutting edges and shank for chips or runout before initiating a cut.