49-57-5171 5/8-18 Fine Thread Straight Flute Plug Tap, Hcs

The Milwaukee 49-57-5171 is a straight-flute plug tap designed for cutting precise internal threads in a variety of metals. Made from high carbon steel (HCS) with a black-oxide finish, this tap delivers clean, accurate threads while resisting wear and corrosion. It is ideal for creating new threaded holes and repairing existing assemblies in brass, aluminum, mild steel, and other common alloys.

This plug tap solves the challenge of achieving high-quality, consistent threads without rework. The straight-flute geometry and square shank enable smooth entry, stable cutting action, and reliable material removal. When paired with proper cutting fluid, the tap cuts effortlessly and boosts productivity whether you're prototyping, maintaining production lines, or tackling shop projects.

Features and Benefits

• Straight-flute design: Provides superior chip evacuation and stable cutting action for flawless thread formation.
• Black-oxide coating: Offers long-lasting corrosion protection and a durable surface that resists rust and wear.
• Square shank compatibility: Fits all standard tap handles and wrenches, allowing quick tool changes and versatile use across your workshop.
• Fine 5/8-18 thread: Delivers high-precision threading for delicate applications in electronics, automotive, and general hardware work.
• HCS construction: Heavy-duty high carbon steel body ensures durability and reliable performance on repeated jobs.

Specifications

• Brand: Milwaukee
• Model: 49-57-5171
• Thread size: 5/8-18 fine thread
• Material: HCS (High Carbon Steel)
• Finish: Black-oxide
• Flute type: Straight flute
• Shank: Square shank