Harvey Tool 915939-C6 Square End Mill 1mm 5 Flute Altin

Product Description

The HARVEY TOOL 915939-C6 is a solid carbide square end mill designed for high-performance milling in demanding materials. With a 1 mm (0.0390 inch) cutting diameter and 5 flutes, it delivers fine detail work and smooth finishes in tight-tolerance applications. The variable helix geometry — set at 37 degrees — reduces chatter and harmonic vibration during cutting, extending tool life and improving surface quality. An AlTiN coating adds thermal resistance and hardness, making this end mill well suited for dry cutting or high-speed passes in ferrous and hardened materials. It is single-end, right-hand cut, and center-cutting capable.

This end mill is used in precision machining environments where small-diameter, high-accuracy milling is required. Typical applications include die and mold work, medical component machining, aerospace detail parts, and electronics fixtures. The 0.117 inch length of cut and 2.5 inch overall length allow access into shallow pockets and slots while maintaining rigidity on a 0.25 inch shank. It mounts in standard 1/4 inch collets or end mill holders commonly found on CNC machining centers and high-speed spindles.

Key Features

• 1 mm cutting diameter with 5-flute geometry for fine-detail milling
• Variable helix design reduces chatter and extends tool life
• AlTiN coating provides thermal and wear resistance for dry and high-speed cutting
• Center-cutting capable — suitable for plunge entry
• Right-hand cut and right-hand flute direction for standard CNC spindle use
• Solid carbide construction for rigidity and precision in micro-milling applications

Compatibility

Designed for use in standard 1/4 inch collet chucks and end mill holders on CNC machining centers and high-speed milling spindles requiring a small-diameter square end mill.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Always power down and lock out the spindle before changing tooling. Seat the shank fully in the collet or holder to the recommended gauge length before torquing the retention nut. Inspect the cutting edges and coating for chips or wear before each use, as micro-diameter end mills are sensitive to runout and improper clamping.