Cleveland C33147 Square End Mill 17/64 in 4 Flute Hss

Product Description

The CLEVELAND C33147 is a 4-flute, high speed steel square end mill designed for precise milling operations in metalworking and machining applications. It features a 17/64-inch (0.2656-inch) cutting diameter with a 3/4-inch length of cut, mounted on a 3/8-inch straight-cylindrical shank with a Weldon flat for secure tool holding. The spiral flute geometry with a 30-degree helix angle promotes efficient chip evacuation, while the centercutting design allows for direct plunge entry. With a 2-1/2-inch overall length, this uncoated end mill suits standard reach milling tasks on CNC machining centers and manual mills alike.

The C33147 is suited for cutting cast iron, non-ferrous metals, and steel in both light and moderate material removal applications. Its right-hand cut and right-hand flute orientation are standard for conventional and climb milling. The regular-length body fits common tool holders and collet chucks with 3/8-inch bore capacity. Machinists and tool-and-die technicians working in job shops, maintenance environments, or production cells will find this a dependable general-purpose end mill for slotting, profiling, and peripheral milling operations.

Key Features

• 17/64-inch (0.2656-inch) cutting diameter for tight-tolerance slot and profile work
• 4-flute design balances chip load and surface finish in ferrous and non-ferrous materials
• Centercutting geometry allows direct plunge milling without pre-drilling
• 30-degree helix angle promotes smooth chip flow and reduces cutting forces
• Weldon flat on 3/8-inch shank provides positive anti-pullout retention in side-lock holders
• Uncoated high speed steel construction suits regrindable, cost-conscious tooling programs

Compatibility

Designed as an OEM-style replacement or direct-fit end mill for standard 3/8-inch bore collet chucks, ER collets, and Weldon-flat side-lock tool holders used on vertical machining centers, knee mills, and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before loading or changing end mills. Seat the shank fully into the tool holder and tighten the set screw against the Weldon flat to the tool holder manufacturer's specification to prevent axial pullout. Verify runout with a dial indicator before beginning a new cut when tolerances are critical.