Osg 404-2188 Square End Mill 7/32 in 4 Flute Solid Carbide

Product Description

The OSG 404-2188 is a 4-flute solid carbide square end mill designed for precise milling operations in ferrous and non-ferrous materials. Built from micrograin carbide, it delivers rigidity and wear resistance across a range of machining applications. The 7/32-inch cutting diameter, 5/8-inch length of cut, and 1/4-inch shank diameter make it well-suited for slotting, profiling, and peripheral milling in tight geometries. A 30-degree helix angle promotes smooth chip evacuation and reduces cutting forces. This tool is part of OSG Series 404 and is sold as a single unit.

This end mill fits standard milling operations in job shops, tool rooms, and production environments. The centercutting geometry allows plunge entry directly into the workpiece, expanding its versatility for interpolated bores and pocket milling. With a 2-1/2-inch overall length, it fits most standard collet chucks and end mill holders with a 1/4-inch bore. The uncoated finish makes it a straightforward choice for general-purpose applications or where coating re-grinding compatibility is a consideration.

Key Features

• Micrograin solid carbide construction for improved hardness and edge retention
• 4-flute spiral geometry with 30-degree helix angle for efficient chip evacuation
• Centercutting design supports direct plunge entry into the workpiece
• Right-hand cut and right-hand flute configuration for conventional milling setups
• Regular-length 5/8-inch length of cut suitable for shallow-to-moderate depth slots and profiles
• Uncoated finish for general-purpose use across a wide range of materials

Compatibility

Designed as an OEM-style replacement and general-purpose square end mill compatible with standard 1/4-inch bore collet chucks and end mill holders used in vertical milling machines, CNC machining centers, and manual mills.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the end mill. Secure the shank to the minimum recommended insertion depth per the toolholder manufacturer specification. Verify runout with a dial indicator before beginning the cut to avoid premature edge wear or tool failure.