Wiseman Threading Tools Second Lead Metric HSS Tap Right Hand - M20x1

Engineered for precision and speed, this high-speed steel (HSS) ground thread tap is your go-to tool for clean, accurate internal threads. Uncoated by design, it delivers dependable cutting action across a broad range of materials while maintaining a compact, robust build that machinists trust. The tap adheres to ISO 529 dimensions and features a right-hand thread with a second lead, meaning faster material removal and improved chip evacuation for through-holes and standard tapping tasks.

Key advantages

• High-speed steel, ground finish for precise threading and a smooth cutting action that resists wear during repeated use.
• Uncoated, general purpose design offers versatile performance across common metals like mild steel, aluminum, and brass, without the extra friction that coatings can introduce in some setups.
• M20x1 right-hand thread with ISO 529 compliance ensures compatibility with standard tapped holes and consistent thread quality across projects.
• Second lead delivers accelerated cutting progress and improved chip clearance, reducing tapping time and minimizing heat buildup on the workpiece.

Ideal applications

• Workshop repairs, maintenance, and production runs where quick, reliable internal threads are required.
• DIY projects, home machine shops, and professional labs that demand consistent thread integrity without coatings complicating setup.
• Metalworking projects involving through-holes in steel, aluminum, and other common metals where a clean, durable thread is essential.

How to use

• Determine the correct drill size per ISO 529 for M20x1 taps and drill the hole accordingly.
• Secure the workpiece and align the tap with the hole. Use a tap wrench, handheld T-handle, or a tapping attachment on a drill press for steady, straight operation.
• Apply cutting fluid or light oil to reduce friction and extend tool life. Begin turning clockwise with even, moderate pressure; advance gradually and back off to break chips as needed.
• Finish by cleaning the threaded bore and inspecting the thread with a gauge to ensure proper engagement and fit.

Whether you’re refreshing worn threads or creating new ones, this Wiseman HSS tap delivers dependable performance and long-term reliability. It’s the right choice for professionals who value precision, efficiency, and consistency in every threading job.