Wiseman Threading Tools Second Lead Metric HSS Tap Right Hand - M56x5.5 is a precision ground threading tap built for reliability in demanding metalworking environments. This uncoated high-speed steel tap is designed to deliver clean, accurate threads in metric holes, following ISO 529 standards while offering a practical, production-friendly two-start (second lead) geometry for faster, smoother tapping.

Why this tap is a standout choice

• Second lead design: A two-start geometry means you cut two thread starts per revolution, which translates to quicker, more forgiving threading in tough materials and deeper holes. Ideal for production runs where time on the machine matters.
• Metric precision, ISO 529 compliant: Engineered to the widely adopted M56x5.5 specification, ensuring compatibility with standard metric nuts, fittings, and threaded components across machines, housings, and assemblies.
• High-speed steel, ground finish: The HSS core is thermally stable under cutting heat, while the ground surface delivers tight pitch accuracy and consistent thread form, reducing the need for rework.
• Uncoated for versatility: Without a coating, this tap works smoothly with a broad range of cutting fluids and coolants, and it won’t trap debris or peel off under heavy use—keeping chip clearance predictable in long taps.
• Right-hand thread: The standard choice for most common metalworking applications, from automotive components to machinery frames, providing predictable performance for everyday tapping tasks.
• USA plug lead: Designed to align with North American workshop setups, helping shops integrate this tap into existing tooling and tapping routines without adapters or special fixtures.

Ideal use cases

This Wiseman tap shines in tough, everyday metalworking scenarios. Use it to recreate or repair internal threads in steel housings, engine blocks, gearbox components, and hydraulic/cylinders where a robust metric thread is required. It’s particularly effective when speed matters but thread quality cannot be compromised, such as refurbishing worn threads in repair work or fabricating new parts for legacy equipment.

Practical tapping tips

• Always follow ISO 529 guidelines for hole size and tapping depth to ensure the second-lead geometry cut starts cleanly and the thread form settles correctly.
• Use a quality cutting fluid or coolant designed for steel to maximize tool life and chip evacuation with a large-diameter tap.
• Work steadily with a taper or starting tap first to establish alignment, then finish with the M56x5.5 tap to the required depth.
• Back off slightly after each full turn to break chips and prevent binding, especially in longer holes.
• Inspect threads with a good thread gauge after tapping to confirm the pitch, depth, and thread fit meet the application’s tolerances.

What you gain with this tap

Durable, reliable threading performance in metric holes without the complication of coatings. The second-lead geometry accelerates production workflows, while the HSS substrate and precise grinding deliver consistent thread quality from the first pass to the last. For shops and DIY enthusiasts tackling metric threads in heavier metals, this tap provides a practical balance of speed, accuracy, and versatility.

Specs at a glance: Metric thread M56x5.5, right-hand, second lead, high-speed steel, ground finish, uncoated, ISO 529 compliant, USA plug lead.