49-57-5392 Hex Threading Die, 3/8-18 NPT

The Milwaukee 49-57-5392 Hex Threading Die is a precision hand tool engineered to cut 3/8-18 NPT external threads in brass, aluminum, mild steel, and other common metals. This die produces accurate, flawless threads that prevent leaks in plumbing, pneumatic, and hydraulic systems—critical for both repair work and new installations.

With a black-oxide protective coating, this threading die resists corrosion and maintains sharp cutting edges through repeated use. The hex head accepts standard die stocks or a wrench, giving you reliable control and straightforward setup on every job.

Features and Benefits

• Precision-machined geometry: Guarantees exact 3/8-18 NPT thread dimensions for leak-free connections in hydraulic, pneumatic, and plumbing applications.
• Hex head design: The hex head mates with standard die stocks or a wrench for quick, secure installation and consistent turning control.
• Laser-etched markings: High-contrast, fade-proof size markings enable fast identification and reduce setup time on the job.
• Black-oxide finish: Superior rust resistance protects the cutting edges and extends tool life even in harsh workshop conditions.
• Versatile metal compatibility: Cuts brass, aluminum, mild steel and other common alloys without sacrificing thread finish quality.

Specifications

• Brand: Milwaukee
• Model: 49-57-5392
• Thread size: 3/8-18 NPT
• Finish: Black-oxide coating