Cleveland C39785 Square End Mill 1/2 in 3 Flute Hss Ticn

Product Description

The CLEVELAND C39785 is a single-end square end mill designed for precision milling operations in metalworking environments. Built from high speed steel with a titanium carbonitride (TiCN) finish, it delivers improved wear resistance and surface hardness compared to uncoated HSS tooling. The 1/2 inch mill diameter pairs with a 2 inch length of cut and a 4 inch overall length, making it well-suited for deeper cavity work without sacrificing rigidity. The 3-flute geometry balances chip evacuation with cutting edge engagement, and the 30-degree helix spiral flute design promotes smooth cutting action. This tool is installed and used by machinists and toolroom professionals in production and job-shop settings.

The C39785 is engineered for use on cast iron, non-ferrous metals, and steel workpieces. Its centercutting capability allows plunge entry directly into a workpiece, expanding its application to slotting, profiling, and plunging operations. The straight cylindrical shank with Weldon flat accommodates standard end mill holders and Weldon-style set-screw tool holders common on vertical machining centers and manual knee mills. The long-length classification provides extended reach into deep pockets or stepped features where standard-length end mills cannot access.

Key Features

• High speed steel construction with TiCN coating for enhanced wear resistance
• 3 flutes with 30-degree right-hand spiral for efficient chip removal
• Centercutting design supports plunge, slot, and profile milling
• Straight cylindrical shank with Weldon flat for secure tool holder engagement
• Long-length series (HG-3) for extended reach into deep features
• Right-hand cut and right-hand flute configuration — standard for most milling setups

Compatibility

Compatible with cast iron, non-ferrous metal, and steel workpieces. Fits standard 1/2 inch end mill holders and Weldon-style set-screw holders used on vertical machining centers and manual milling machines.

Installation Notes

Installation is performed by a qualified machinist or toolroom technician. Power down and lock out the machine spindle before installing or removing tooling. Secure the Weldon flat against the set screw in the tool holder to prevent axial pull-out under cutting load. Verify runout at the tool tip after installation and before beginning a cut to confirm proper seating.