Cleveland C33142 Square End Mill 5/32 in 4 Flute Hss

Product Description

The CLEVELAND C33142 is a 4-flute, single-end square end mill manufactured from high speed steel (HSS). It carries a 5/32-inch (0.1563-inch decimal) cutting diameter with a 1/2-inch length of cut and a 3/8-inch straight-cylindrical shank with Weldon flat. Overall length is 2-3/8 inches. The spiral flute geometry runs right-hand cut with a right-hand flute direction and a 30-degree helix angle. The tool is center-cutting, allowing plunge entry in addition to peripheral and slot milling. It leaves a square shoulder profile and is supplied uncoated in the HG-4C series.

This end mill is suited for milling operations on cast iron, non-ferrous metals, and steel in both manual and CNC machining setups. The regular-length configuration keeps the tool compact for shorter-reach applications where rigidity is critical. The Weldon flat shank provides positive drive and reduces slippage in standard end mill holders. Machinists and tool-and-die professionals use this size for fine detail work, slots, and pockets where smaller diameter tooling is required.

Key Features

• 4 flutes for improved surface finish and feed rate capability in steel and cast iron
• 30-degree helix angle balances chip evacuation and cutting force across supported workpiece materials
• Center-cutting design allows plunge milling without a pre-drilled pilot hole
• Right-hand cut and right-hand flute direction for standard spindle use
• Straight-cylindrical shank with Weldon flat for secure tool holding
• Uncoated HSS construction for general-purpose milling across a broad material range

Compatibility

Designed as a standard-shank replacement end mill for 3/8-inch end mill holders and collets in manual mills, knee mills, and CNC machining centers. Primary workpiece materials include cast iron, non-ferrous metals, and steel.

Installation Notes

Installation and tool changes must be performed with the machine spindle fully stopped and locked out per standard lockout/tagout procedures. Seat the Weldon flat against the set screw in the tool holder before tightening to ensure proper drive engagement. Use appropriate speeds and feeds for the workpiece material and cutting diameter to avoid tool deflection or premature wear. Machinist or toolroom professionals should verify tool runout after installation using a dial indicator before beginning the cut.