Meet the Wiseman Threading Tools Second Lead Metric HSS Tap Left Hand - M14x2. This high-speed steel ground thread tap is uncoated for versatile performance across metals, delivering precise, durable threads in a wide range of jobs. With ISO 529 dimensions and a left-hand thread, it’s built for specialized applications where reverse-threaded fasteners or counter-rotating assemblies are required. The second lead (two-start) design accelerates thread formation, helping you complete projects faster without sacrificing accuracy.

• Left-hand thread for reverse-thread applications: When your project calls for left-handed fasteners or a rotation that tightens in the opposite direction, this tap creates clean, accurate M14x2 threads that behave as intended under load.
• Second lead (two-start) design: Cut threads more quickly by engaging two cutting starts per revolution, reducing the number of passes and improving efficiency on thicker materials or deeper holes.
• ISO 529 compliant, M14x2: Standardized dimensions ensure reliable interchangeability with compatible nuts, bolts, and components in metric assemblies.
• High-speed steel, ground and uncoated: A tough, sharp edge designed for dependable metal removal, with an uncoated surface that works well with common cutting oils and coolants for smooth chip flow and longer tool life.
• General-purpose performance: Perfect for machine shops, maintenance facilities, and serious DIY enthusiasts tackling left-hand thread projects or reverse-rotation assemblies.
• Use cases and practical tips
  • Before tapping, drill a pilot hole to the recommended size for M14x2 left-hand threads and the second-lead geometry.
  • Apply light cutting oil or tapping fluid to reduce heat, minimize tool wear, and improve finish quality.
  • Turn the tap steadily and avoid over-pedaling; for deeper holes, back out occasionally to clear chips and prevent binding.
  • Inspect the newly cut thread with the mating fastener to confirm engagement and torque characteristics before full assembly.

Designed for reliability in challenging setups, this Wiseman tap helps you achieve accurate left-hand threads with fewer passes, smoother finishes, and consistent performance across a range of metals. Whether you’re fabricating, repairing, or maintaining equipment that requires a left-hand M14x2 thread, this tool is a precise, durable choice that supports precise results and long-term dependence.