Milwaukee 14-20 NS Machine Screw Plug Tap

Milwaukee 14-20 NS Plug Tap

The Milwaukee 49-57-5133 1/4"-20 NS Plug Tap is a precision-machined threading tool designed for clean, accurate internal threads in special-thread applications. Built for durability and consistent performance, it features high carbon steel construction and a black oxide coating to resist corrosion and wear. The straight flute design handles general-purpose threading with ease, while the plug style is ideal for through-hole applications—helping you produce smooth, reliable threads without unnecessary hassle.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: 49-57-5133
• Brand: Milwaukee
• Size / Thread: 1/4"-20 NS
• Product Type: Plug tap for internal threading
• Material: High Carbon Steel
• Finish: Black Oxide coating for corrosion resistance
• Tap Style: Straight flute for general-purpose threading
• Tap Type: Plug tap designed for through holes
• Shank: Square shank compatible with standard tap handles and wrenches
• Markings: Laser-etched sizing for clear, long-lasting visibility
• Application Materials: Suitable for brass, aluminum, mild steel, and similar metals
• Usage Note: Hand use recommended — not for power tools
• Recommended Use: Best results with cutting fluid

Ideal For

• Creating or repairing internal special threads
• Through-hole threading in metal materials
• Mechanical and fabrication work requiring non-standard thread applications
• Users needing precise, consistent threading performance
• Anyone working with specialty threads—where guessing definitely isn’t part of the process