Harvey Tool 24631-C3 Ball End Mill 0.031 in 4 Flute Altin

Product Description

The HARVEY TOOL 24631-C3 is a miniature solid carbide ball end mill built for precision milling in steel, stainless steel, and cast iron. With a 0.031-inch (0.80 mm) mill diameter and a 4-flute helical design, this single-end tool delivers consistent material removal across both roughing and finishing operations. The 30-degree helix angle promotes efficient chip evacuation at small diameters. An AlTiN PVD coating increases surface hardness and thermal resistance, extending tool life in ferrous and abrasive materials. The stub-length geometry keeps deflection low when profiling tight features or shallow pockets.

This end mill is suited for die and mold work, aerospace component machining, and precision part production where small-diameter toolpaths are required. The straight-cylindrical 0.125-inch shank fits standard collet chucks and tool holders common in CNC machining centers and milling machines. Its stub configuration makes it a practical choice for applications where minimal overhang is needed to maintain rigidity and surface finish accuracy.

Key Features

• 0.031-inch ball nose diameter with a 0.0155-inch nose radius for fine-feature contouring
• 4-flute helical geometry supports both roughing and finishing in a single tool
• AlTiN PVD coating for elevated hardness and heat resistance in ferrous materials
• 30-degree helix angle aids chip flow at miniature diameters
• Stub-length designation minimizes deflection in shallow-reach applications
• Solid carbide construction provides rigidity and wear resistance at small scales

Compatibility

Designed for milling steel, stainless steel, and cast iron (ISO material codes P, M, and K). Fits standard 0.125-inch straight-bore collet chucks and tool holders on CNC milling machines and machining centers.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe state before changing tooling. Seat the shank fully in a properly sized collet or end mill holder and torque the retention mechanism to the tool holder manufacturer's specification. Verify runout with a dial indicator before beginning production cuts, as excessive runout at miniature diameters accelerates premature breakage.