Hss straight flute tap details
Triumph ThunderTap Straight Flute Hand Taps HSS Bronze Oxide 1-1/4-11-1/2 NPT Taper (071256)
Triumph 071256 ThunderTap Straight Flute Hand Taps HSS Bronze Oxide 1-1/4-11-1/2 NPT Taper is a precision hand tap designed for cutting or restoring National Pipe Taper (NPT) threads in large-diameter applications. Made from high-speed steel (HSS) with a bronze oxide finish, this taper tap provides smooth threading, professional-grade accuracy, and long-lasting durability for industrial, maintenance, and professional use.
High-speed steel (HSS) construction ensures superior strength and wear resistance.
Straight flute design allows efficient chip removal and precise threading.
Bronze oxide coating enhances corrosion resistance and reduces friction.
Taper tap style enables gradual threading for easier starting and alignment.
Specifically engineered for 1-1/4-11-1/2 NPT threads for accurate and consistent results.
Exclusive MAX LIFE™ technology extends tool life with fresh grains.
ECO-TRIM™ backing absorbs vibration for comfortable operation and longer tool lifespan.
100% ceramic grain with cooling agent minimizes heat generation and prevents discoloration.
Efficiently cuts or restores NPT taper threads with minimal effort.
Durable construction extends tool life and ensures reliable performance.
Enhanced vibration control delivers comfortable, stable operation.
Ideal for industrial, professional, and maintenance threading applications.
Technical Specifications:
Type: Straight Flute Hand Tap
Material: High-Speed Steel (HSS)
Thread Size: 1-1/4-11-1/2 NPT
Coating/Finish: Bronze Oxide
Tap Style: Taper Tap
Applications: Cutting or restoring NPT taper threads on pipes, fittings, and industrial components
Product identification
- Brand: Triumph
- Model / MPN: 71256
Straight flute hand tap: see the listed specifications for this model.





