Sgs 40521 Square End Mill 0.1181 in 3 Flute Carbide

Product Description

The SGS 40521 is a solid carbide square end mill designed for precision milling in a wide range of metalworking applications. Built to Series 5M specifications, it features a 0.1181-inch (3 mm) cutting diameter, a 0.4724-inch (12 mm) length of cut, and a 3-flute spiral geometry with a 30-degree helix angle. The micrograin carbide construction provides hardness and wear resistance suited to demanding cuts. The bright, uncoated finish and right-hand cut with right-hand flute direction are standard for general-purpose milling. This end mill is centercutting, allowing direct plunge entry into workpiece material.

This end mill is suited for use on CNC machining centers and manual mills where small-diameter, high-precision cuts are required. It is rated for use across a broad range of workpiece materials, including hardened steels, cast iron, stainless steel, non-ferrous metals, non-metals, and high-temperature alloys, corresponding to material codes H, K, M, N, P, and S. The straight-cylindrical shank and regular-length profile make it compatible with standard collet and end mill holder tooling. It is appropriate for finish milling, slotting, and profiling operations at small scales.

Key Features

• Micrograin solid carbide construction for hardness and edge retention
• 3-flute spiral geometry with 30-degree helix angle for efficient chip evacuation
• Centercutting design allows direct plunge entry
• Right-hand cut, right-hand flute direction for standard CNC compatibility
• Bright uncoated finish suitable for a wide range of workpiece materials
• Straight-cylindrical shank fits standard collet and end mill holder systems

Compatibility

Rated for workpiece material codes H, K, M, N, P, and S, covering hardened steels, cast irons, stainless steels, non-ferrous metals, non-metals, and high-temperature alloys. Designed for use with standard collet systems accepting a 0.1181-inch (3 mm) straight-cylindrical shank.

Installation Notes

Installation is performed by machining professionals using a compatible collet or end mill holder torqued to the toolholder manufacturer specifications. Verify runout and shank seating before operation. Inspect the cutting edges for damage before each use. Follow all machine guarding and PPE requirements applicable to CNC and manual milling operations.