Milwaukee 5/8"-18 NF Plug Tap

Milwaukee 5/8"-18 NF Plug Tap

The 49-57-5171 Milwaukee 5/8"-18 NF Plug Tap is a precision threading tool designed for clean, accurate fine-thread cutting in through-hole applications, making it a dependable choice for both repair and fabrication work. Built from high carbon steel with a black oxide coating, it’s engineered for durability and corrosion resistance. The plug-style design offers a balanced lead for easier starts and consistent threading—because threads should go in smoothly, not argue with you halfway down.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 49-57-5171
• Brand: Milwaukee
• Product Type: Plug tap
• Size / Thread: 5/8 in. – 18 NF (National Fine)
• Material: High carbon steel for strength and long service life
• Finish: Black oxide coating for corrosion resistance
• Tap Style: Straight flute for general-purpose threading
• Threading Design: Plug style tap ideal for through-hole applications
• Shank Type: Square shank compatible with standard tap handles and wrenches
• Markings: Laser-etched size and specifications for easy identification
• Application Materials: Suitable for brass, aluminum, mild steel, and similar metals
• Usage Note: Designed for hand use only; not recommended for power tools
• Usage Tip: Use with cutting fluid for smoother operation and longer tool life

Ideal For

• Cutting or repairing 5/8"-18 NF threads in through holes
• Fine-thread applications requiring precision and clean engagement
• Mechanics and fabricators needing consistent threading performance
• Use with tap handles or wrenches for controlled operation
• Anyone who prefers threads that fit right the first time instead of needing a “second attempt adjustment”