Bottoming Tap, Fractional Size,1/4-28NF - Vermont American

The Vermont American 20269 Bottoming Tap, Fractional Size, 1/4-28NF, is a professional-grade threading tool engineered for precision and durability in demanding automotive and industrial environments. Crafted from tough, high-carbon tool steel, this tap is designed to create clean, accurate internal threads, particularly in blind holes where full thread depth is critical for secure fastening. It is a reliable choice for technicians and mechanics who require consistent performance and extended tool life.

Key Features

• Bottoming Tap Design: Features a minimal chamfer (typically 1 to 1.5 threads) that enables thread cutting to the very bottom of blind holes, maximizing the engagement of fasteners.
• High-Carbon Tool Steel Construction: Manufactured from high-carbon tool steel, ensuring superior strength, wear resistance, and long-lasting sharpness for repeated professional use.
• Precision Ground Threads: Produced to exacting specifications, this tap delivers consistently clean and accurate internal threads, crucial for reliable assembly.
• Permanently Marked Drill Size: The required drill size (#3) is clearly and permanently marked on the tap, providing quick reference and minimizing the risk of errors during operation.
• Fractional Size 1/4-28NF: Cuts a 1/4-inch diameter thread with 28 National Fine (NF) threads per inch, a common and versatile specification for a wide range of applications.

Applications

This Vermont American bottoming tap is an essential tool for various professional applications. It is ideally suited for automotive repair, such as rethreading stripped holes in engine blocks, cylinder heads, or manifold repairs where maximum thread engagement is necessary. In industrial and machinery maintenance, it is used to create or repair threads in equipment, fixtures, and other components, ensuring robust and secure fastenings. Its design makes it particularly valuable in metalworking and fabrication, where precise, full-depth internal threads are required in materials like steel, aluminum, and brass.