Seco 17011632 Square End Mill 0.25 in 2 Flute Cobalt SP205

Product Description

The SECO 17011632 is a single-end, square-profile cobalt end mill designed for material removal in ferrous and high-temperature alloy applications. Built from M42 cobalt high-speed steel, it delivers greater heat and wear resistance than standard HSS tooling, making it well suited for interrupted cuts and harder workpiece materials. The cutter features a 0.25-inch diameter, a 0.5-inch length of cut, and a 30-degree spiral helix angle that promotes efficient chip evacuation. The bright, uncoated finish maintains a sharp edge and is appropriate for applications where coating adhesion or coolant interaction is a concern. This tool is installed and run by machinists and toolroom technicians on vertical mills, knee mills, and CNC machining centers.

The 17011632 is suited for short-reach profiling, slotting, and peripheral milling in steel, stainless steel, cast iron, and high-temperature alloys. The 0.375-inch shank diameter fits standard ER and straight-bore toolholders. Its 2.3125-inch overall length keeps the tool rigid in short-reach setups where deflection must be minimized. The centercutting geometry allows plunge entry directly into the workpiece without a pre-drilled pilot hole. This tool is part of the SP205 series and is shipped as a single unit with a minimum order quantity of one.

Key Features

• M42 cobalt construction for improved heat resistance over standard HSS in ferrous and high-temp alloy cuts
• 30-degree helix angle promotes efficient chip flow and reduces recutting in spiral flute operation
• Centercutting geometry allows direct plunge milling without a pre-drilled starting hole
• Bright, uncoated finish maintains sharp edge geometry and suits dry or flood-coolant environments
• Right-hand cut and right-hand flute configuration for standard spindle rotation on conventional and CNC mills
• Short length type with 0.375-inch shank provides rigidity and reduced runout in tight setups

Compatibility

Designed for use on vertical mills, knee mills, and CNC machining centers with standard 0.375-inch straight-bore or collet-style toolholders. Primary workpiece materials include steel, stainless steel, cast iron, and high-temperature alloys per ISO material codes P, M, K, and S.

Installation Notes

Installation should be performed by a qualified machinist following shop safety procedures. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the shank to the specified minimum engagement depth in the toolholder to reduce runout and tool pullout risk. Verify TIR does not exceed 0.001 inches after installation, and confirm feeds, speeds, and depth of cut are set within the tool manufacturer recommendations for the workpiece material before initiating the cut.