Osg 5742808 Square End Mill 27/32 in 6 Flute Vanadium Hss

Product Description

The OSG 5742808 is a 6-flute square end mill designed for precision milling in ferrous and hardened materials. Built from 3% vanadium high speed steel, this single-end tool carries a titanium carbonitride (TiCN) finish that extends tool life and reduces friction at the cutting edge. The mill measures 0.8438 inches (27/32 inches) in diameter with a 1.875-inch length of cut and a 4-inch overall length. The 5/8-inch shank diameter fits standard collets and side-lock holders. Machinists and tool-and-die professionals use this end mill for slotting, profiling, and peripheral milling in manual and CNC machining centers.

This end mill is suited for general-purpose and production milling in job shops, tool rooms, and manufacturing environments. The 30-degree helix angle and spiral flute geometry promote efficient chip evacuation and smooth cutting action across a range of materials including alloy steels, tool steels, and stainless. The centercutting design allows direct plunge entry without pre-drilling. Its regular-length body keeps deflection low during full-depth passes. The right-hand cut, right-hand flute configuration is standard for conventional and climb milling setups.

Key Features

• 6-flute spiral geometry for improved surface finish and chip load distribution
• TiCN coating increases hardness and thermal resistance at the cutting edge
• 30-degree helix angle promotes efficient chip flow and reduced cutting forces
• Centercutting capable — allows direct plunge milling without a pilot hole
• 3% vanadium HSS substrate for wear resistance in demanding alloy and tool steel applications
• Right-hand cut and right-hand flute — compatible with standard CNC and manual mill setups

Compatibility

Part of OSG Series 574. Fits standard 5/8-inch collet chucks, milling chucks, and side-lock end mill holders used in vertical and horizontal machining centers.

Installation Notes

Installation and tool changes must be performed with the spindle fully stopped and machine power isolated. Ensure the shank seating depth meets holder manufacturer minimums to prevent tool pullout under load. Verify collet or chuck runout before production cuts, as excessive runout accelerates edge wear on multi-flute tools. This end mill should be installed by a qualified machinist familiar with feeds, speeds, and depth-of-cut parameters appropriate to the workpiece material.