Cleveland C33170 Square End Mill 25/32 in 4 Flute Hss

Product Description

The CLEVELAND C33170 is a 4-flute square end mill designed for material removal and contouring operations in ferrous and non-ferrous metals. Built from high speed steel with a spiral flute geometry and a 30-degree helix angle, this tool delivers consistent chip evacuation and surface finish in general-purpose milling applications. The mill measures 0.7813 inches in diameter with a 1.875-inch length of cut and a 3/4-inch straight-cylindrical shank with Weldon flat. Right-hand cut and right-hand flute orientation are standard. Centercutting capability allows direct plunge entry without a pre-drilled pilot hole, adding versatility for slot milling and pocket entry.

This end mill is suited for job shops, maintenance machining, and production environments where cast iron, non-ferrous metals, and steel are the primary workpiece materials. The HG-4C series regular-length geometry fits standard vertical machining centers and manual knee mills with R8 or straight-shank toolholders. The uncoated HSS construction makes it a cost-effective choice for lower-speed cutting operations or shops that regrind tooling in-house.

Key Features

• 0.7813 inch (25/32 inch) cutting diameter with 1.875-inch length of cut
• 4-flute spiral configuration with 30-degree helix angle for efficient chip removal
• Centercutting design allows plunge milling and slot entry without pre-drilling
• Right-hand cut and right-hand flute — standard orientation for conventional and climb milling
• Straight-cylindrical shank with Weldon flat for secure collet or side-lock toolholder retention
• Uncoated high speed steel construction — compatible with in-house regrinding programs
• HG-4C series regular length — balanced reach and rigidity for general shop use

Compatibility

Designed for use in standard vertical machining centers and manual milling machines accepting a 3/4-inch straight shank. Rated for primary workpiece materials including cast iron, non-ferrous metals, and steel.

Installation Notes

Installation is performed by machinists or tool-and-die technicians using a collet chuck or side-lock Weldon-flat toolholder rated for the shank diameter. Ensure the spindle is fully stopped and the machine is in a locked-out state before loading or removing the tool. Verify runout with a dial indicator after seating to minimize premature tool wear. Follow machine manufacturer feed and speed recommendations for HSS tooling in the specific workpiece material.