Wiseman M14x1.25 Left-Hand Thread Tap — Second Lead, HSS, Ground

Experience reliable, precision threading with the Wiseman Threading Tools Second Lead Metric HSS Tap in M14x1.25. Crafted for performance in professional shops and demanding maintenance environments, this left-hand thread tap is designed to cut clean, accurate threads where a reverse rotation is required. The combo of high-speed steel, ground geometry, and a second lead makes it a standout choice for efficient, dependable tapping tasks.

• Left-hand metric threading: specifically engineered to cut M14x1.25 left-hand threads, ideal for assemblies that rely on reverse-threaded fasteners to prevent loosening under load.
• Second lead (double-start): the double-start design accelerates thread formation, enabling quicker breakthroughs on deep holes and reducing overall tapping time without sacrificing thread quality.
• High-speed steel, ground finish: precisely ground for consistent tooth alignment and chip evacuation, delivering smooth cutting action across a range of steels and alloys.
• General-purpose, ISO 529 alignment: manufactured to ISO 529 dimensions, ensuring compatibility with standard hole tolerances and predictable results in everyday machining.
• Uncoated durability: the uncoated surface emphasizes toughness and easy re-sharpening in-service, making it a dependable tool for long-term use in busy workshops.
• Versatile applications: suitable for manual tapping with a T-handle or machine tapping in mills and dedicated tapping heads—perfect for automotive components, gear housings, brake assemblies, and other left-hand threaded parts.
• Practical use tips: pair with appropriate lubricants to minimize friction, maintain steady feeds, and use the correct pilot hole per ISO 529 recommendations. For long holes, back out the tap periodically to clear chips and maintain thread quality.

This single, purpose-driven tool from Wiseman Threading Tools is built for professionals who demand reliability, precision, and efficiency in every tapped thread. Whether you're rebuilding a transmission housing, assembling left-hand threaded fixtures, or performing maintenance on machinery with reverse-threaded fasteners, this M14x1.25 tap delivers consistent results you can trust.