Cleveland C39072 Square End Mill 15/32 in 2 Flute Hss

Product Description

The CLEVELAND C39072 is a two-flute, square-end, single-end mill ground from high speed steel (HSS) and designed for general-purpose milling in ferrous and non-ferrous materials. It carries a 15/32 inch (0.4688 inch decimal) cutting diameter with a 2-inch length of cut, a 1/2-inch straight-cylindrical shank with a Weldon flat, and a 4-inch overall length. The 30-degree spiral flute geometry and right-hand cut with right-hand flute direction promote efficient chip evacuation. This is a centercutting design, which means it can be used for both peripheral milling and direct plunge cuts without a pre-drilled pilot hole.

The C39072 belongs to the HG-2 long series and is suited for operations where extra reach or a deeper length of cut is required. Primary workpiece materials include cast iron, non-ferrous metals, and steel. Typical applications include slot milling, shoulder milling, and profile cuts on manual knee mills and CNC machining centers. The uncoated HSS construction is well suited to lower-speed setups, regrinding programs, or shops that prefer HSS over carbide for interrupted cuts or softer materials.

Key Features

• 15/32 inch cutting diameter (0.4688 inch decimal) with 2-inch length of cut for deep-slot capability
• High speed steel construction — resists chipping in interrupted cuts and supports in-house regrinding
• Centercutting geometry allows direct plunge entry without a pilot hole
• 30-degree helix angle with spiral flute for smooth chip flow and reduced cutting forces
• Right-hand cut, right-hand flute — standard rotation for conventional milling spindles
• 1/2-inch straight-cylindrical shank with Weldon flat for positive drive in side-lock holders
• Long series (HG-2) for extended reach applications

Compatibility

Designed for use in milling machines and machining centers accepting a 1/2-inch straight shank with Weldon flat. Primary workpiece materials listed by the manufacturer are cast iron, non-ferrous metals, and steel.

Installation Notes

Install in a side-lock or Weldon-style end mill holder that engages the Weldon flat on the shank to prevent pull-out under load. Ensure the machine spindle is fully stopped and the tool is secured before adjusting reach or changing tooling. Consult your machine tool manufacturer's guidelines for appropriate speeds and feeds when milling steel versus non-ferrous materials with HSS tooling. Inspect the cutting edges for wear or chipping before each use and replace or regrind when edge condition degrades.