Seco 17011791 Square End Mill 0.75 in 6 Flute Cobalt

Product Description

The SECO 17011791 is a single-end cobalt square end mill designed for material removal in demanding machining applications. Built to M42 cobalt high-speed steel grade specifications, it delivers increased heat and wear resistance compared to standard M2 HSS tooling. The cutter measures 0.75 inches in diameter with a 1.625-inch length of cut and a 3.875-inch overall length. Six spiral flutes with a 30-degree right-hand helix provide efficient chip evacuation and a smooth cutting action. This end mill is centercutting, allowing plunge entry, and runs in a right-hand cutting direction. It carries no coating, leaving a bright uncoated finish appropriate for general-purpose and ferrous machining setups.

The 17011791 is suited for milling operations on steel, stainless steel, cast iron, aluminum and other non-ferrous metals, and high-temperature alloys. Its short-length classification makes it a stable choice for face milling, slotting, and profiling passes where rigidity matters. The 0.75-inch shank diameter matches the cutter diameter directly, supporting solid tool holding in standard end mill holders, collet chucks, or shrink-fit systems. This tool is appropriate for CNC machining centers and manual knee mills used in job shop, production, and maintenance repair environments.

Key Features

• M42 cobalt material grade for improved heat resistance over standard HSS tooling
• Six spiral right-hand flutes with 30-degree helix angle for efficient chip flow
• Centercutting geometry allows direct plunge entry without pre-drilling
• Bright uncoated finish compatible with a wide range of cutting fluids and workpiece materials
• Short-length series (SPC408) for maximum rigidity during heavy cuts
• No chipbreaker, variable helix, or coolant-through features — straightforward general-purpose design

Compatibility

Designed for use on steel, stainless steel, cast iron, aluminum and non-ferrous metals, and high-temperature alloys per SECO SPC408 series application guidance. Compatible with any tool holder accepting a 0.75-inch straight shank end mill.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Secure the 0.75-inch shank fully within the tool holder to the minimum engagement depth recommended by the holder manufacturer, and confirm runout does not exceed the 0.001-inch TIR maximum before cutting. Power down and lock out the spindle before changing tooling. Verify the machine spindle rotation is set to right-hand before engaging the cut.