Milwaukee 5/8"-18 NF Hex Die

Milwaukee 5/8"-18 NF Hex Die

The 49-57-5371 Milwaukee 5/8"-18 NF Hex Die is a precision threading tool built for clean, accurate fine-thread cutting and repair, making it a reliable choice for both shop and field work. Constructed from high carbon steel with a black oxide coating, it’s designed for durability and corrosion resistance under repeated use. With clear laser-etched markings and a labeled starting side, it helps ensure proper alignment—because starting threads straight is a lot easier than fixing them later.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 49-57-5371
• Brand: Milwaukee
• Product Type: Hex threading die
• Size / Thread: 5/8 in. – 18 NF (National Fine)
• Material: High carbon steel for strength and long tool life
• Finish: Black oxide coating for corrosion resistance
• Design: Hex die for use with die stocks or standard wrenches
• Hex Size: 1-7/16 in. for compatibility with die stocks and hand tools
• Markings: Laser-etched size and specifications for clear identification
• Threading Function: Suitable for creating or repairing threads
• Application Materials: Works on brass, aluminum, mild steel, and similar metals
• Setup Feature: Clearly labeled starting side for easier threading alignment
• Usage Tip: Best used with cutting fluid for smoother cuts and extended tool life

Ideal For

• Cutting or repairing 5/8"-18 NF threads with precision
• Fine-thread applications where accuracy and clean engagement matter
• Mechanics and fabricators needing consistent threading results
• Use with die stocks or wrenches for flexible operation
• Anyone who prefers threads that go on smoothly instead of putting up a fight halfway through