Seco 10268358 Square End Mill 1 in 4 Flute Solid Carbide

Product Description

The SECO 10268358 is a solid carbide, 4-flute square end mill designed for high-performance material removal in demanding machining applications. With a 1-inch mill diameter and an extra-long 4-inch length of cut, this single-end tool is built for deep-cavity and extended-reach milling where standard-length tools fall short. The SIRON-A coating provides enhanced wear resistance and heat stability, making it well-suited for aggressive cuts in ferrous and high-temperature alloy materials. Micrograin carbide construction supports edge sharpness and tool life across extended production runs. Right-hand cutting and right-hand helical flutes at a 30-degree helix angle promote efficient chip evacuation and smooth surface finish.

This end mill is intended for use in CNC machining centers and manual mills where extended reach into deep pockets, slots, or contours is required. Primary workpiece materials include steel, stainless steel, cast iron, and high-temperature alloys, corresponding to material codes P, M, K, and S. The straight-cylindrical shank with a 1-inch diameter is compatible with standard collet chucks and end mill holders. The extra-long configuration is particularly useful in aerospace, die and mold, and heavy industrial part machining where standard flute lengths are insufficient.

Key Features

• Solid micrograin carbide construction for extended tool life and edge retention
• SIRON-A coating improves wear resistance and thermal performance in steel and high-temp alloy cuts
• 4-inch length of cut on an extra-long 7-inch overall length for deep-reach applications
• 30-degree right-hand helical flutes promote efficient chip flow and reduce cutting forces
• Center-cutting capability allows direct plunge entry without pre-drilling
• No chipbreaker, no coolant-through, no variable helix — straightforward setup and application

Compatibility

Designed for use in CNC and manual milling setups with standard 1-inch collet chucks or end mill holders. Suitable for milling steel, stainless steel, cast iron, and high-temperature alloys per material codes P, M, K, and S. Part of the SECO C5141 series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Secure the straight-cylindrical shank in a properly sized, clean collet chuck or end mill holder, torqued to the toolholder manufacturer specification. Confirm runout does not exceed the listed TIR maximum of 0.0005 inches before commencing a cut. Always power down and lock out the spindle before changing or adjusting tooling.