20-56 TPI Single Pitch One Quarter Inch Solid Carbide Thread End Mill For Metalworking, 0.018 Inch Cutting Diameter, Necked To Thread 0.5 Inch Deep, Four Flute Mill Bit For Medium Hardness Steel Brass Iron

Single 1/4in Carbide Thread End Mill, 4-Flute, 0.18in Ø
✔️ Shank 1/4in, Ø0.18in, 4-flute, necked to 0.5in, 2.5in L

This solid carbide thread end mill is designed for precision threading and general milling in medium-hard metals. It’s commonly used on CNC and manual mills to cut or finish threads in steel, brass, cast iron, copper, and nonferrous alloys (HRC 45-55).

✅ Shank diameter: 1/4 in (6.35 mm)
✅ Cutting diameter: 0.18 in (4.57 mm)
✅ Neck depth: 0.5 in (12.7 mm)
✅ Overall length: 2.5 in (63.5 mm)
✅ Flutes: 4
✅ Material: solid carbide with AlCrN coating

💡 What is a thread end mill used for in metalworking? Thread end mills are handy for creating and finishing threaded profiles within metal parts. - internal thread milling in steel, brass, and cast iron - finishing threads with tight tolerances - works with CNC mills for clean, repeatable results