The Wiseman Threading Tools Second Lead Metric HSS Tap Left Hand – M22x1 is a purpose-built internal threading solution designed for reliability, speed, and precision in metalworking. Crafted from high-speed steel and ground to exacting tolerances, this uncoated tap delivers predictable chip formation and robust performance across a range of ferrous and nonferrous materials. With ISO 529 dimensions, a left-hand thread, and a second lead, it’s optimized for efficient, high-quality thread production in specialized applications.

• Left-hand thread (LH): Creates reverse-threaded internal threads for assemblies that rely on counter-rotation or anti-loosening behavior.
• Second lead / two-start design: A multi-start profile that accelerates thread formation, reducing overall tapping time while maintaining crisp thread engagement.
• Metric M22x1: Standard internal thread size that pairs with compatible components and fasteners for precise, repeatable results.
• High-speed steel, ground, uncoated: Durable, easily resharpened tool with predictable cutting action that suits a range of metals, including steel and cast iron.
• Shank compatibility: Square drive designed for common tap wrenches, delivering solid torque transfer and easy handling in workbenches or machines.
• USA plug lead: Tailored for standard US machine setups, ensuring reliable alignment and consistent performance in everyday shop environments.

This tap is ideal for machinists, fabricators, automotive technicians, and repair specialists who regularly work with left-handed fasteners or need a fast-cutting solution for creating precise M22x1 LH threads. Whether rebuilding gear housings, attaching left-handed collars, or servicing differential components, this tool provides dependable threading with a clear, clean finish that you can trust project after project.

Practical tips for maximizing results:

• Pair with a quality cutting fluid or oil to manage heat and extend tool life, and maintain a steady, controlled feed to preserve thread geometry.
• Ensure proper alignment with the hole axis to prevent thread distortion and achieve consistent engagement across the entire thread length.
• After use, clean and store in a dry environment to protect the uncoated HSS surface from corrosion and wear.