Osg 5740600 Square End Mill 9/32 in 4 Flute Vanadium Hss

Product Description

The OSG 5740600 is a 4-flute square end mill designed for general-purpose milling in a wide range of metalworking applications. Built from 3% vanadium high speed steel, it delivers solid wear resistance and edge retention in ferrous and non-ferrous materials without the need for a coating. The cutter measures 9/32 inch (0.2813 inch) in diameter with an 11/16 inch (0.6875 inch) length of cut, a 3/8 inch shank diameter, and a 2-1/2 inch overall length. The 30-degree spiral helix promotes efficient chip evacuation and smooth cutting action. This is an uncoated, regular-length end mill suited for machinists working in job shops, tool rooms, or maintenance environments.

The OSG 5740600 is intended for use in vertical milling machines, CNC machining centers, and manual knee mills where a standard right-hand cut, right-hand flute end mill is required. Its centercutting geometry allows it to be plunged directly into a workpiece, making it suitable for slot milling, profiling, and pocket entry operations. The regular-length design provides rigidity appropriate for general-purpose work rather than deep-reach or extended-neck applications. Machinists working with steel, aluminum, cast iron, and similar materials will find this a dependable everyday tool for medium-duty cutting tasks.

Key Features

• 3% vanadium high speed steel construction for improved wear resistance over standard M2 HSS
• 4-flute geometry for improved surface finish and feed rate capability in ferrous materials
• 30-degree helix angle promotes chip flow and reduces cutting forces
• Centercutting design enables direct plunge entry without pre-drilling
• Uncoated finish — suitable for re-sharpening in a tool room environment
• Right-hand cut, right-hand spiral flute — standard configuration for conventional milling setups

Compatibility

Designed as an OEM-style replacement or standard-stock square end mill for use in any machine tool spindle accepting a 3/8 inch straight shank, including ER collet systems, end mill holders, and Weldon-style holders of the appropriate bore size.

Installation Notes

Installation should be performed by a qualified machinist. Ensure the machine spindle is fully powered down and locked out before changing tooling. The shank should be inserted to the full recommended engagement depth in the holder to minimize runout and prevent pullout under cutting loads. Follow the machine tool manufacturer and holder manufacturer specifications for clamping torque and projection length. Inspect the cutting edges for chips or damage before each use.