Osg HP441-7087 Square End Mill 0.7087 in 4 Flute Carbide

Product Description

The OSG HP441-7087 is a solid carbide square end mill designed for high-performance milling applications in demanding shop environments. Built on OSG's HP441 series, it features a 0.7087-inch (18 mm) mill diameter, a 1.378-inch length of cut, and four spiral flutes with a 35-degree helix angle. The TiAlN finish extends tool life in high-temperature cutting conditions. Micrograin carbide construction provides the hardness and edge retention needed for difficult-to-machine materials. This tool is intended for use by machinists and toolroom professionals in CNC and manual milling operations.

This end mill is suited for slotting, profiling, and peripheral milling in ferrous and non-ferrous materials where a center-cutting, right-hand spiral tool is required. The HP441 series targets general-purpose and production milling where consistent tool life and surface finish are priorities. Its 18 mm shank diameter and 102 mm overall length fit standard milling chucks and collet holders commonly used in vertical and horizontal machining centers.

Key Features

• Solid micrograin carbide construction for hardness and edge retention
• TiAlN coating for heat resistance and extended tool life in high-speed cutting
• 4-flute spiral design with 35-degree helix for efficient chip evacuation
• Center-cutting geometry allows plunge entry as well as peripheral milling
• Right-hand cut and right-hand flute direction for standard CNC spindle compatibility
• No chipbreaker, variable helix, or variable index — consistent geometry for predictable performance

Compatibility

Designed as an OEM-style production end mill for use in standard milling machine spindles and CNC machining centers accepting an 18 mm shank diameter.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Secure the shank fully within the collet or end mill holder to the recommended engagement depth before tightening. Ensure the spindle is fully stopped and the machine is in a locked or e-stop state before tool changes. Follow the machine tool manufacturer's guidelines and applicable shop safety standards when setting cutting parameters.