Helical Solutions 87213 Square End Mill 3/16 in 6 Flute

Product Description

The HELICAL SOLUTIONS 87213 is a 6-flute solid carbide square end mill engineered for high-efficiency machining (HEM) of ferrous and high-temperature alloys. It carries an APLUS coating for improved wear resistance and heat management during aggressive cutting operations. The mill diameter is 0.1875 inches (3/16 inch) with a 0.25-inch straight shank, making it compatible with standard collet toolholding systems. A variable index flute spacing reduces harmonic chatter, allowing higher feed rates and improved surface finish on demanding materials. Licensed machinists and CNC tooling specialists working in job shop and production environments are the primary users of this tool.

This end mill is designed for roughing and finishing operations on steel, stainless steel, cast iron, and high-temperature alloys. Its 6-flute geometry with helical flute profile is well suited to HEM strategies that use high radial engagement with reduced axial depth of cut. The 5/16-inch length of cut and 2.5-inch overall length make it appropriate for shallow-to-moderate depth passes in tight-clearance workholding setups. It is a single-end tool with right-hand cutting and right-hand flute direction.

Key Features

• 6-flute solid carbide construction for rigidity and extended tool life in ferrous materials
• APLUS coating provides thermal and abrasion resistance for steel and stainless steel applications
• Variable index flute spacing reduces vibration and chatter during high-efficiency machining passes
• Centercutting design allows plunge entry as well as peripheral and slot milling
• 0.25-inch straight shank fits standard collet and end mill holder systems
• Right-hand cut, right-hand helix with helical flute geometry optimized for chip evacuation

Compatibility

Suited for use in steel (P), stainless steel (M), cast iron (K), and high-temperature alloy (S) workpiece materials as designated by ISO material classification. This is a fractional-inch series tool within the HELICAL SOLUTIONS End Mills for Titanium - 6 Flute - Square - Variable Pitch - For HEM product line.

Installation Notes

Install in a precision collet or end mill holder sized for a 0.25-inch shank; confirm runout with a dial indicator before production cutting. Ensure the spindle and tool are fully engaged and tightened to the toolholder manufacturer's torque specification before starting the machine. Always verify CNC program feed rates, speeds, and depth-of-cut values against the toolmaker's published cutting data for the specific workpiece material. Inspect cutting edges for wear or chipping before each use and replace the tool if any damage is observed.