Seco 17010399 Roughing End Mill 1 in 5 Flute Cobalt

Product Description

The SECO 17010399 is a single-end roughing end mill manufactured from M42 cobalt high-speed steel and designed for aggressive material removal in milling operations. It features a 1-inch mill diameter and a 5-flute spiral configuration with a right-hand cutting and flute direction. The 30-degree maximum helix angle and bright uncoated finish make it suited for roughing passes on ferrous and non-ferrous workpiece materials. With a 2-inch length of cut and a 4.5-inch overall length, this tool fits standard vertical and horizontal milling setups. Installation and use require a machine spindle with a 1-inch collet or end mill holder.

This end mill is intended for use in machine shop and industrial manufacturing environments where high-rate roughing cuts are required. The M42 cobalt grade provides increased heat and wear resistance compared to standard M2 HSS, making it appropriate for harder or tougher workpiece materials. It is a single-end, non-center-cutting tool, so plunge entry is not supported. The Series REM445 designation identifies it within the SECO roughing end mill product line.

Key Features

• 1-inch mill diameter with matching 1-inch shank diameter for rigid toolholder fit
• 5-flute spiral design for increased material removal rates during roughing passes
• M42 cobalt construction for improved heat resistance over standard HSS grades
• Right-hand cutting and right-hand flute direction, regular length classification
• Bright/uncoated finish suitable for use with or without cutting fluid
• Non-center-cutting geometry — requires pre-drilled entry or ramping

Compatibility

Designed as an OEM-specification roughing end mill for use in standard 1-inch end mill holders, collet chucks, or Weldon-style shanked toolholders on vertical or horizontal milling machines.

Installation Notes

Installation and use of this end mill should be performed by a qualified machinist or toolroom professional. Power down and lock out the machine spindle before inserting or removing the tool from its holder. Verify shank runout and holder condition before use to avoid premature tool wear or breakage. Consult applicable shop safety standards and machine manufacturer guidelines when establishing feeds and speeds.