Allied TM11NPT Thread Mill 1-11/2 Npt 4 Flute Solid Carbide

Product Description

The ALLIED MACHINE AND ENGINEERING TM11NPT is a solid carbide helical flute thread mill designed for cutting 1-11/2 NPT threads in both internal and external applications. With a 0.62-inch cutting diameter and a 1.125-inch length of cut, it is built for precision tapered pipe thread production on CNC machining centers. The TiAlN coating provides heat and wear resistance for extended tool life in ferrous and non-ferrous materials. A right-hand flute direction and 4-flute geometry promote chip evacuation and stable cutting action. This tool is suited for shops and field machining operations requiring accurate NPT thread forms.

The TM11NPT is intended for machining 1-11/2 NPT tapered pipe threads in production and maintenance environments. It performs in both internal bore threading and external thread milling operations, making it versatile across pipe fitting, manifold, and valve body applications. With a 4-inch overall length and a 5/8-inch shank diameter, it fits standard CNC tool holders and suits a range of milling machine setups. Machinists, toolroom operators, and maintenance professionals working with pipe thread connections in steel, cast iron, and similar materials are the primary users.

Key Features

• Cuts 1-11/2 NPT tapered pipe threads for internal and external applications in a single tool
• Solid carbide construction for rigidity and dimensional stability under cutting loads
• TiAlN coating improves wear resistance and supports higher cutting speeds in ferrous materials
• 4-flute right-hand helical geometry promotes efficient chip flow and thread accuracy
• No coolant-through design simplifies setup on standard machining centers
• 5/8-inch shank diameter fits common CNC collet and end mill holder systems

Compatibility

Designed for CNC machining centers capable of helical interpolation for NPT tapered pipe thread milling; compatible with standard 5/8-inch collet chucks and end mill holders. Minimum nominal diameter for the thread form is 1.0 inch per NPT standard.

Installation Notes

Thread milling requires a CNC control with helical interpolation capability; verify controller support before programming. Secure the tool firmly in a balanced, runout-minimized holder to maintain thread form accuracy. Confirm workpiece fixturing is rigid before starting the cut to prevent chatter and thread-form deviation. Follow applicable shop safety procedures for carbide tooling, including eye protection and proper tool-change lockout on the machine spindle.