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The EAGLE CUTTING TOOL MT-390-300-T-I is a high-speed steel (HSS) metric taper tap designed to cut internal threads in metal workpieces. It produces M39.0 threads with a 3.00 mm pitch, making it suited for large-diameter threading applications in steel, iron, aluminum, and similar materials. The taper lead allows progressive thread engagement, reducing torque requirements and making it easier to start the tap straight in the hole. This tap is a standard import-grade tool used by machinists, pipefitters, and maintenance trades in production and repair environments.
This tap is used in industrial, commercial, and heavy maintenance settings where large metric-threaded fastener holes are required. Typical applications include fabrication of machine frames, heavy equipment repair, structural assemblies, and any job that calls for an M39 coarse thread. Its taper chamfer makes it well suited as the first tap in a threading sequence or as a standalone tap in through-holes.
Designed as an OEM-style threading tool for applications requiring M39.0 x 3.00 metric coarse internal threads in ferrous and non-ferrous metal workpieces.
This tap is installed by machinists or trade professionals using a tap wrench or machine tapping setup. Always ensure the workpiece is securely clamped and the pilot hole is drilled to the correct tap drill diameter before threading. Apply cutting fluid appropriate for the workpiece material to extend tap life and improve thread quality. Discontinue use if the tap shows signs of wear or breakage to avoid workpiece damage.
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