Meet the Wiseman Threading Tools Second Lead Metric HSS Tap Right Hand — M30x3.5, a precision threading tap engineered for reliability in demanding metalworking tasks. Built from high-speed steel and ground to ISO 529 dimensions, this tap delivers consistently clean, accurate threads with minimal wander, making it a trusted choice for shops and workshops that demand repeatable results.

What makes it stand out

• Two‑start (second lead) geometry: The double‑start design cuts faster than a standard tap, reduces tapping effort, and enhances chip clearance in deep holes. This means quicker cycle times and smoother thread formation in thick materials.
• Right‑hand thread, M30x3.5: Precisely matched to common metric fasteners, enabling secure, load‑bearing joints in a wide range of projects from fabrication to maintenance.
• ISO 529 compliant: Officially dimensioned for interchangeability and consistency across tools and materials, so you can trust the fit with your design specifications.
• Uncoated HSS for versatility: Without a coating, the tap exposes the steel substrate for easier sharpening and predictable wear, making it a solid choice for a broad spectrum of metals, including steels and alloys.
• Square end drive: The square drive end integrates smoothly with taps, T‑handles, and compatible drilling setups, ensuring stable alignment and reduced deflection during cutting.

Ideal applications

• Through‑hole and blind‑hole thread tapping in steel, cast iron, and certain nonferrous metals where strong, durable threads are required.
• Repair work in automotive, machinery, and general fabrications where a robust M30x3.5 thread is needed quickly.
• Prototyping and production environments where consistent thread quality accelerates assembly and reduces rework.

Practical guidance for best results

• Use a quality cutting oil or coolant to minimize heat and maximize chip clearance.
• Align carefully to the workpiece and maintain steady, even pressure to prevent misalignment or tap breakage.
• Begin with a light pilot to establish a clean starting hole, then advance at a controlled feed—let the two‑start geometry do the heavy lifting.
• Periodically back off to break chips and prevent binding, especially in deeper holes or thicker sections.
• Inspect threads after tapping and deburr the entry to ensure smooth fastener seating and proper torque.

Designed for professionals and serious hobbyists alike, the Wiseman Threading Tools Second Lead HSS Tap is a reliable workhorse for precise, efficient threading. When your project calls for durable, accurately formed M30x3.5 threads with quick cutting action, this right‑hand, two‑start tap delivers the performance you need—time after time.