Osg 402-3543 Square End Mill 0.3543 in 2 Flute Carbide

Product Description

The OSG 402-3543 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. With a 0.3543 inch (9 mm) mill diameter and a 0.8661 inch (22 mm) length of cut, this tool delivers clean, flat-bottomed cuts in a compact form factor. The 30-degree helix angle and two-flute spiral design promote efficient chip evacuation and smooth cutting action. Built from micrograin solid carbide, the 402-3543 holds tight tolerances and resists wear in demanding cutting conditions. It is installed by machinists and tool-and-die professionals in CNC and manual milling setups.

This end mill is suited for slotting, profiling, and peripheral milling in a wide range of materials. The centercutting geometry allows the tool to plunge directly into a workpiece, making it versatile for both entry cuts and full-depth passes. With right-hand cut and right-hand flute orientation, it is compatible with standard spindle rotation on vertical and horizontal milling machines. The regular-length configuration fits within a length of cut range of 0.8000 to 1.0000 inches, making it appropriate for moderate-depth milling work in production and job-shop environments.

Key Features

• 0.3543 inch (9 mm) mill diameter with 0.8661 inch (22 mm) length of cut
• Two-flute spiral design with 30-degree helix angle for efficient chip removal
• Micrograin solid carbide construction for extended tool life and edge retention
• Centercutting geometry allows direct plunge entry into workpiece material
• Right-hand cut, right-hand flute — compatible with standard spindle rotation
• Uncoated finish; no variable helix, variable index, or chipbreaker

Compatibility

Designed as an OEM-style replacement and standard tooling option for CNC and manual milling machines accepting a 10 mm (0.3937 inch) shank diameter, within the OSG Series 402 product line.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's setup procedures. Ensure the spindle is fully powered down and locked out before loading or removing end mills from the collet or tool holder. Verify that shank diameter matches the holder bore and that the tool is secured to the recommended engagement depth before operation. Always inspect the cutting edges for chips or damage before each use.