Wiseman Threading Tools Second Lead Metric HSS Tap Right Hand - M20x2 is a high-precision threading tap built to deliver clean, repeatable threads in a range of metals. Crafted from ground high-speed steel and offered in an uncoated format for versatile, general-purpose use, this tap adheres to ISO 529 dimensions. It features a right-hand thread and a true second lead for faster cutting—Second lead. (USA Plug lead).

Why this tap stands out in real-world machining

• Ground high-speed steel, uncoated delivers precise flute geometry and dependable edge life across steel, aluminum, and other common machinables without the variability of coatings.
• ISO 529 compliant geometry ensures compatibility with standardized holes and thread depths, reducing rework and ensuring consistent thread engagement.
• Right-hand thread with a second lead accelerates thread formation and improves chip flow, making it especially effective for through-holes and thicker workpieces.
• Square shank for standard tap wrenches provides reliable grip and straightforward manual operation, helping you maintain alignment and torque control during tapping.

Ideal use cases

Designed for larger-diameter metric threads, this M20x2 tap is perfect for fabrication shops, maintenance workflows, and hobbyist projects where robust, quick-start tapping is essential. Use it for through-holes in steel, cast iron, or similar metals, or when rebuilding assemblies that require a precise, durable M20x2 thread.

Tips for optimal results

Pair the tap with a suitable tap wrench and light cutting fluid or oil to reduce wear and heat. Start with alignment to prevent cross-threading, apply steady pressure as the threads begin, and back off periodically to clear chips as you approach full thread depth. After use, clean the flutes and lightly lubricate the edge to extend tool life for future projects.