Seco 17002750 Square End Mill 0.025 in 4 Flute Carbide

Product Description

The SECO 17002750 is a solid carbide square end mill designed for precision milling in demanding trade and industrial machining applications. With a 0.025-inch cutting diameter and a 0.0375-inch length of cut, this stub-length tool is built for tight-tolerance work in confined geometries. The four-flute, right-hand spiral configuration with a 30-degree helix angle promotes efficient chip evacuation and stable cutting action. Micrograin carbide construction delivers the hardness and edge retention required when machining difficult materials. The bright, uncoated finish suits a wide range of workpiece materials without the risk of coating adhesion issues at micro-scale diameters.

This end mill is rated for use on cast iron, stainless steel, aluminum and non-ferrous alloys, steel, and high-temperature alloys. Its centercutting geometry allows plunge entry as well as conventional peripheral milling, making it adaptable for slot milling, profiling, and pocket work on CNC machining centers and manual mills where small-diameter tooling is required. The 1/8-inch straight shank fits standard collet systems common in precision machine shops and tool rooms. At 1.5 inches overall length, the stub configuration minimizes deflection at this diameter, which is critical when holding tight tolerances in hard materials.

Key Features

• 0.025-inch cutting diameter with plus or minus 0.0005-inch diameter tolerance for precise fitment
• Solid micrograin carbide construction for hardness and edge retention in tough alloys
• 4-flute right-hand spiral with 30-degree helix for balanced chip load and evacuation
• Centercutting design enables direct plunge entry without a pre-drilled pilot hole
• Bright, uncoated finish compatible across cast iron, steel, stainless, aluminum, and high-temp alloys
• Stub length (1.5 inches OAL) minimizes tool deflection at micro-diameter cutting dimensions

Compatibility

The SECO 17002750 belongs to the MES430 series and is designed for use in standard 1/8-inch collet systems on CNC machining centers and precision manual mills. Rated for primary workpiece materials including cast iron, stainless steel, aluminum and non-ferrous metals, steel, and high-temperature alloys.

Installation Notes

Installation and tool changes must be performed by a qualified machinist or CNC operator with the machine in a full stop and lockout state. Use a calibrated collet and torque the retention mechanism per the machine manufacturer's specification to avoid runaway TIR at this diameter; note the maximum TIR for this tool is 0.0001 inches. Inspect the collet bore for wear or contamination before seating the shank, as shank diameter tolerance is -0.0001 to -0.0004 inches. At 0.025-inch diameter, tool breakage risk is elevated at excessive feed rates or spindle runout — verify machine TIR before use.