Accupro 930-43714 Thread Mill 7/16-14 Unc 4 Flute Carbide

Product Description

The ACCUPRO 930-43714 is a helical flute thread mill designed for cutting internal UNC threads to a 7/16-14 specification. Built from micrograin solid carbide, it delivers the rigidity and edge retention needed for threading operations in ferrous and non-ferrous materials. The tool features a TiAlN coating that improves heat resistance and extends tool life in demanding cutting conditions. With 4 flutes and a cutting diameter of 0.3050 inches, it produces clean, accurate threads in a single helical pass. The 5/16-inch shank diameter is compatible with standard CNC toolholders. This tool is installed and operated by machinists and CNC programmers in production and job-shop environments.

This thread mill is suited for internal threading operations on CNC machining centers where a single tool must produce a complete 7/16-14 UNC thread form. The 0.8750-inch length of cut accommodates through-holes and blind holes within that depth range. The minimum nominal diameter this tool addresses is 0.4375 inches. It is commonly used in aerospace, automotive, and general manufacturing applications where thread milling is preferred over tapping for improved accuracy, tool life management, or difficult-to-machine materials.

Key Features

• Micrograin solid carbide construction for high rigidity and wear resistance
• TiAlN coating for elevated heat resistance and extended tool life
• 4 helical flutes for smooth cutting action and chip evacuation
• 0.3050-inch cutting diameter sized for 7/16-14 UNC internal threads
• 0.8750-inch length of cut for through-holes and blind holes up to that depth
• 5/16-inch shank diameter fits standard CNC collet and toolholder systems

Compatibility

Designed for CNC machining centers capable of helical interpolation; produces 7/16-14 UNC internal threads with a minimum nominal diameter of 0.4375 inches.

Installation Notes

Thread mills require a CNC control capable of helical interpolation — confirm G-code support before programming the toolpath. Secure the shank in a precision collet or shrink-fit holder to minimize runout, which directly affects thread accuracy. Verify spindle speed and feed rate against the carbide grade and workpiece material before starting the cut. Do not use this tool in manual milling operations.