Seco 17011841 Square End Mill 1 in 4 Flute Cobalt SPC408

Product Description

The SECO 17011841 is a cobalt square end mill built for material removal in steel, stainless steel, cast iron, aluminum, non-ferrous metals, and high-temperature alloys. It runs a 1 inch cutting diameter with a 1-7/8 inch length of cut and a 3/4 inch shank diameter, giving machinists a rigid, short-reach geometry suited to general milling work. The four-flute, right-hand spiral configuration runs at a 30-degree helix angle and supports centercutting, allowing plunge entry directly into the workpiece. The M42 cobalt substrate provides better heat resistance than standard HSS, extending tool life in tougher materials without the need for a coating. It ships as a single-end tool in the Series SPC408 lineup.

This end mill is designed for milling operations on machining centers and manual mills in job shop, production, and maintenance environments. It is a short-length tool suitable for slotting, peripheral milling, and shoulder milling in ferrous and non-ferrous workpiece materials. The uncoated bright finish makes it easy to inspect for wear and re-coat if needed. Typical users include CNC machinists, tool-and-die workers, and maintenance machinists working across a range of part materials including mild steel, 304 stainless, gray cast iron, aluminum alloys, and nickel-based high-temp alloys.

Key Features

• 1 inch cutting diameter with 1-7/8 inch length of cut for short, rigid reach
• M42 cobalt material grade for improved heat resistance over standard HSS
• 4-flute, 30-degree right-hand spiral helix for efficient chip evacuation
• Centercutting geometry allows direct plunge entry without pre-drilling
• Bright/uncoated finish compatible with re-coating processes
• Right-hand cut and right-hand flute for standard spindle operation

Compatibility

Designed for use in standard end mill holders and collet chucks accepting a 3/4 inch shank diameter. Suitable for milling steel, stainless steel, cast iron, aluminum and non-ferrous metals, and high-temperature alloys as indicated by primary workpiece material codes P, M, K, N, and S.

Installation Notes

Installation is performed by a machinist or toolroom technician using a standard end mill holder, collet chuck, or Weldon-style holder sized for a 3/4 inch shank. Confirm runout does not exceed the 0.0010 inch TIR maximum before cutting. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Follow your machine tool manufacturer guidelines for appropriate feeds, speeds, and depth of cut for the workpiece material.