Iscar 5604977 Helical Flute Thread Mill Solid Carbide

Product Description

The ISCAR 5604977 is a solid carbide helical flute thread mill designed for cutting internal threads in ferrous and non-ferrous materials. It features a 0.065-inch cutting diameter with a 0.17-inch length of cut and a 0.25-inch shank diameter, making it suited for precision thread milling in tight-profile applications. The 56 TPI configuration handles number 2 and number 3 thread sizes across both UNC and UNF standards. A TiAlN coating provides thermal resistance and wear protection during high-speed cutting cycles. This tool is installed and operated by machinists and CNC programmers working with small-diameter internal thread features.

This thread mill is intended for internal thread generation on CNC machining centers where helical interpolation is used to produce UNC and UNF thread profiles in sizes 2 and 3. The three-flute right-hand design supports stable cutting action in both through and blind-hole applications. At 2.5 inches overall length, the tool provides sufficient reach for standard workpiece setups without sacrificing rigidity. It is commonly used in production and job-shop environments where repeatability and thread quality are critical requirements.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding cutting conditions
• TiAlN coating extends tool life at elevated cutting temperatures
• Three right-hand helical flutes provide stable chip evacuation during thread interpolation
• Cuts number 2 and number 3 thread sizes to both UNC and UNF standards in a single tool
• 0.065-inch cutting diameter and 0.17-inch length of cut suited for small-diameter internal thread features
• No coolant-through design - compatible with standard external coolant delivery setups

Compatibility

Designed for internal thread milling of number 2 and number 3 UNC and UNF thread profiles using helical interpolation on CNC machining centers equipped with a 0.25-inch collet or tool holder.

Installation Notes

This tool is installed by machinists in a 0.25-inch precision collet or end mill holder on a CNC machining center capable of helical interpolation. Confirm machine spindle speed, feed rate, and helical pitch settings are programmed to match the 56 TPI thread specification before running the cycle. Inspect the cutting edge and coating condition before each use, as solid carbide tooling is brittle and susceptible to chipping if mishandled during setup. Do not run this tool in a conventional drill cycle - thread milling requires proper interpolation routines.