Cleveland C32577 Square End Mill 3/16 in 4 Flute Cobalt

Product Description

The CLEVELAND C32577 is a cobalt square end mill designed for high-performance milling in demanding materials. Built to M42 cobalt grade, it delivers the heat and wear resistance required when cutting stainless steel, high-temperature alloys, and steel. The tool measures 0.1875 inches in diameter with a 0.5 inch length of cut, a 0.375 inch straight-cylindrical shank (also compatible with Weldon flat holders), and a 2.375 inch overall length. Four spiral flutes with a 30-degree helix angle promote efficient chip evacuation. A TiN (titanium nitride) coating adds surface hardness and lubricity. This is a centercutting, single-end tool — it can plunge directly into a workpiece.

The C32577 belongs to the CLEVELAND HGC-4C series, configured for right-hand cut and right-hand flute rotation. It is suited for shops and maintenance operations machining stainless steel, carbon steel, and high-temperature alloys on manual mills or CNC machining centers. The regular-length geometry and 3/8 inch shank make it practical for general-purpose slotting, profiling, and light-duty pocketing on production and repair work alike.

Key Features

• M42 cobalt construction for elevated hot hardness in difficult-to-machine alloys
• TiN coating increases surface hardness and reduces friction at the cutting edge
• 4-flute, 30-degree helix spiral geometry balances chip load and surface finish
• Centercutting design allows direct plunge entry without pre-drilling
• Right-hand cut and right-hand flute — standard rotation for most spindles
• Straight-cylindrical shank with Weldon flat option for positive holder engagement

Compatibility

Designed as an OEM-style replacement or direct-use tool in the CLEVELAND HGC-4C series. Rated for primary workpiece materials including high-temperature alloys (material code S), stainless steel (M), and steel (P) per ISO material classification.

Installation Notes

Installation is performed by a machinist or toolroom technician using a standard end mill holder or Weldon flat set-screw holder sized for a 3/8 inch shank. Confirm spindle rotation is set to right-hand (clockwise viewed from spindle nose) before engaging the cut. Power down and de-energize the machine before changing tooling. Never exceed the tool manufacturer's recommended speeds and feeds for the specific workpiece material and depth of cut.