Hertel GG030022 Square End Mill 11/32 in 2 Flute Cobalt

Product Description

The HERTEL GG030022 is a 2-flute cobalt square end mill designed for general-purpose milling in ferrous and high-temperature alloy materials. Built from M42 cobalt high-speed steel, it delivers added heat and wear resistance compared to standard HSS tooling. The cutter measures 11/32 inch (0.3438 inch) in diameter with a 9/16 inch length of cut and a 3/8 inch shank diameter, giving it a compact profile suited for slot milling, peripheral milling, and light profiling. The 30-degree spiral helix promotes efficient chip evacuation, and the centercutting geometry allows plunge entry. This is an uncoated end mill, making it well suited for use with cutting fluids in conventional machining setups.

The GG030022 is used in metalworking applications on manual mills, CNC machining centers, and knee mills where a small-diameter, short-flute end mill is required. Its 2-3/8 inch overall length fits standard collet and end mill holder tooling systems. The M42 cobalt construction makes it a practical choice when machining stainless steel, alloy steel, cast iron, and similar materials that generate elevated cutting temperatures. This end mill is installed and operated by machinists and tool-and-die professionals in job shop, maintenance, and production environments.

Key Features

• M42 cobalt high-speed steel construction for improved heat and wear resistance
• 2-flute spiral geometry with 30-degree helix angle promotes chip evacuation in slot and plunge cuts
• Centercutting design allows direct plunge entry without pre-drilling
• Right-hand cut, right-hand helix configuration for standard milling spindle use
• Uncoated finish compatible with flood coolant and cutting oil applications
• 3/8 inch shank fits widely available collets and end mill holders

Compatibility

Designed as an OEM-style replacement or direct-use cutting tool for milling applications requiring a 3/8 inch shank, 11/32 inch diameter, 2-flute square end mill in cobalt construction.

Installation Notes

Installation is performed by a qualified machinist. Secure the shank fully into a collet or end mill holder, ensuring the tool is seated to the minimum insertion depth recommended by the toolholder manufacturer. Confirm spindle direction is set to right-hand rotation before engaging the cut. Inspect the cutting edges for chips or damage before each use and replace the tool if wear is visible.