Helical Solutions 30242 Square End Mill 5/16 in 4 Flute Carbide

Product Description

The HELICAL SOLUTIONS 30242 is a 4-flute solid carbide square end mill designed for high-performance milling in steel and other ferrous materials. With a 0.3125-inch mill diameter and a 0.75-inch length of cut, this tool delivers precise shoulder milling, slotting, and profiling in demanding shop environments. The APLUS coating reduces friction and heat buildup at the cutting edge, extending tool life in steel-cutting applications. A variable index flute spacing reduces harmonics during the cut, helping machinists achieve better surface finish and dimensional accuracy. This end mill is installed and used by CNC machinists and tool-and-die professionals.

This end mill is suited for milling operations on steel workpieces in both production and job-shop environments. The 5/16-inch straight cylindrical shank fits standard ER collet chucks and end mill holders commonly found on vertical machining centers and CNC mills. The 2.5-inch overall length provides adequate reach for most standard-depth pocketing and profiling operations without sacrificing rigidity. The right-hand cutting and right-hand helical flute direction are standard for conventional and climb milling setups on CNC equipment.

Key Features

• Solid carbide construction for rigidity and wear resistance in steel applications
• APLUS coating reduces heat and friction, extending tool life
• Variable index flute spacing minimizes chatter and improves surface finish
• Center-cutting geometry allows plunge entry cuts
• Right-hand cut and right-hand helix for standard CNC milling operations
• Straight cylindrical shank fits ER collet chucks and standard end mill holders

Compatibility

Designed as an OEM-style replacement and standard fit for CNC vertical machining centers and manual mills accepting a 5/16-inch straight cylindrical shank via ER collet chuck or end mill holder.

Installation Notes

This end mill is installed by CNC machinists and toolroom professionals. Power down and lock out the spindle before changing tooling. Ensure the shank is fully seated and properly torqued in the collet or holder according to the toolholder manufacturer specifications. Inspect the cutting edges for chips or wear before each use; a damaged edge should not be run at full parameters.