Sgs 40325 Square End Mill 0.1378 in 2 Flute Solid Carbide

Product Description

The SGS 40325 is a solid carbide square end mill designed for precision milling in a wide range of metalworking applications. Built from micrograin carbide with a bright uncoated finish, it features a 0.1378 inch cutting diameter, 0.4724 inch length of cut, and a 30-degree spiral helix angle. The two-flute configuration and right-hand cut geometry promote efficient chip evacuation and clean edge finishes in ferrous and non-ferrous materials. Machinists and tool-and-die professionals install this end mill in CNC machining centers and manual mills where small-diameter, high-precision cuts are required.

This end mill is suited for milling slots, profiles, and pockets in a variety of workpiece materials. The Series 3M designation corresponds to a regular-length geometry with a straight-cylindrical shank, making it compatible with standard collet and end mill holder systems. Primary workpiece material codes H, K, M, N, P, and S indicate suitability across hardened steels, cast irons, stainless steels, non-ferrous alloys, general steels, and heat-resistant superalloys. It is a single-end tool intended for light to moderate material removal at small cutting diameters.

Key Features

• 0.1378 inch (3.5 mm) cutting diameter with a mill diameter tolerance of +0.000 / -0.050 mm
• 0.4724 inch (12 mm) length of cut suited for shallow-to-moderate pocket depths
• Micrograin solid carbide construction for improved wear resistance and edge sharpness
• 30-degree helix angle with spiral flute geometry for smooth chip flow
• Right-hand cut, right-hand flute, centercutting design allows plunge entry
• Bright uncoated finish — no coating buildup risk on precision-ground edges

Compatibility

Designed for use in standard collet chucks and end mill holders accepting a 0.1575 inch (4.00 mm) straight-cylindrical shank. Compatible with workpiece material codes H, K, M, N, P, and S as specified by the manufacturer for the Series 3M line.

Installation Notes

This tool is installed by machinists in CNC machining centers or manual milling machines using an appropriate collet or end mill holder sized for a 4.00 mm shank diameter. Verify shank runout and holder cleanliness before seating the tool to avoid premature edge wear. Follow machine manufacturer guidelines for spindle speed and feed rate at this diameter. Handle carbide tooling carefully to avoid chipping the cutting edges during storage and installation.