49-57-5121 8-32 Coarse Straight Flute Plug Tap, Hcs Square Shank

The Milwaukee 49-57-5121 is a precision-engineered plug tap designed for creating and repairing #8-32 coarse internal threads in brass, aluminum, mild steel, and other common alloys. This hand tool features a straight flute geometry that optimizes the cutting path for smooth thread formation while minimizing chip buildup, making it ideal for metalworking professionals who demand accuracy and efficiency in both new hole creation and thread repair work.

The tap's robust HCS (high-carbon steel) square shank fits any standard tap handle or wrench, providing universal compatibility and versatile operation in the workshop. The black-oxide finish delivers superior rust protection and corrosion resistance, extending service life even in harsh environments. Laser-etched size markings provide permanent, clear identification for quick tool selection, while the precision design eliminates chatter and reduces torque to ensure consistent, tight-tolerance results without sacrificing productivity.

Features and Benefits

• Straight Flute Design: Optimized cutting geometry for smooth thread formation and minimal chip accumulation in demanding metalworking applications.
• #8-32 Coarse Thread Profile: Engineered for the most frequently used fastener size in automotive and industrial assemblies.
• HCS Square Shank: Compatible with all standard tap handles and wrenches for reliable, hassle-free operation.
• Black-Oxide Coating: Provides extended corrosion resistance and durability in tough workshop conditions.
• Laser-Etched Markings: Permanent size identification eliminates guesswork during tool selection and setup.
• Reduced Torque: Design minimizes resistance during threading, enabling faster setup times and longer tool life.

Specifications

• Brand: Milwaukee
• Model: 49-57-5121
• Thread Size: #8-32 coarse
• Flute Type: Straight flute
• Shank Type: HCS square shank
• Finish: Black oxide