Seco 17011708 Square End Mill 0.25in 4 Flute Cobalt

Product Description

The SECO 17011708 is a cobalt square end mill designed for material removal in ferrous and non-ferrous metals across milling, slotting, and profiling operations. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention in demanding cuts. It carries a bright uncoated finish, a 30-degree helix angle, and a 4-flute spiral configuration with centercutting capability. At 0.25 inches in diameter with a 1.25-inch length of cut, this is a right-hand cut, right-hand flute tool suited for precise work in steel, stainless steel, cast iron, aluminum, non-ferrous materials, and high-temperature alloys. It is a single-end tool in the SPC408 series.

This end mill fits standard vertical and horizontal milling machines, CNC machining centers, and manual knee mills. Its 0.375-inch shank diameter accepts common ER and end mill collet holders. The centercutting design allows direct plunge entry into workpieces. Typical applications include slotting, shoulder milling, and contour milling in job shop, tool and die, and production machining environments. It is sized for light-to-medium material removal where tight tolerance and surface finish matter.

Key Features

• M42 cobalt construction provides elevated heat resistance versus standard M2 HSS
• Centercutting design permits direct plunge milling without pre-drilling
• 30-degree helix angle promotes smooth chip evacuation in steel and stainless
• Bright uncoated finish suits use with cutting fluids and in aluminum or non-ferrous materials
• Right-hand cut and right-hand flute, SPC408 series regular-length configuration
• No coolant-through or chipbreaker — straightforward general-purpose geometry

Compatibility

Compatible with workpiece materials including steel, stainless steel, cast iron, aluminum and non-ferrous metals, and high-temperature alloys. Fits any holder accepting a 0.375-inch straight shank. Designed as a general-purpose single-end cobalt square end mill in the SPC408 series.

Installation Notes

Installation and tool changes must be performed with the spindle fully stopped and machine power locked out per applicable shop safety procedures. Seat the shank fully into the collet or end mill holder and torque the retention hardware to the tool holder manufacturer specification. Confirm runout with a dial indicator before cutting — maximum TIR is 0.001 inches per specification. Apply cutting fluid appropriate to the workpiece material and verify chip clearance before engaging full depth of cut.