Wiseman Threading Tools Second Lead Metric HSS Tap — Right Hand, M60x5.5

When precision internal threads are non‑negotiable, this Wiseman HSS tap delivers dependable performance for metric M60x5.5 applications. Built for robust workshop use, it features a right‑hand cut, uncoated high‑speed steel, and a carefully ground thread that aligns with ISO 529 dimensions for consistent hole quality from start to finish.

• Material and finish: High‑speed steel (HSS), uncoated for efficient cutting and good wear resistance in standard machining environments. Ground thread geometry ensures clean engagement and predictable results.
• Standards and accuracy: Conforms to ISO 529 threading conventions for reliable sizing and form, simplifying hole preparation and mating with fasteners.
• Lead system: Second lead (plug lead) design to accelerate tapping and improve thread finish; in North America this lead type is commonly referred to as the plug lead, helping you choose the right lead sequence for through‑hole work.
• Thread direction and size: Right‑hand thread for standard metric assemblies; M60x5.5 denotes a 60 mm nominal diameter with a 5.5 mm pitch, a common large‑diameter metric thread.
• Versatility in use: Suitable for hand tapping or machine tapping setups, with the second lead helping to complete the thread efficiently in both through and longer blind holes when paired with taper and bottom leads.

What this means in practice

• For heavy fabrications and engine components that require a solid internal thread at M60x5.5, this tap provides controlled chip formation and stable cutting action—reducing runout and improving thread accuracy.
• Because it adheres to ISO 529 geometry, you’ll find drill sizes and tapping sequences align with standard tooling, making setups quicker and more repeatable.

Usage tips for best results

• Drill the pilot hole to the recommended diameter for M60x5.5 before tapping to ensure clean, concentric threads. ISO 529 guidance supports the proper approach for metric taps.
• Begin with the taper lead to establish alignment, then switch to the second lead to finish the thread efficiently; this sequence is a standard practice supported by Wiseman‑style tooling information.
• Apply a suitable cutting fluid to manage heat and extend tap life, particularly when working with steel or harder alloys.
• Use a thread gauge to verify proper engagement depth and fit after tapping to ensure reliability in service.

For professionals who demand dependable, ISO‑compliant internal threads in metric form, the Wiseman Second Lead HSS Tap — Right Hand, M60x5.5 — is built to deliver consistent results project after project. Its uncoated HSS composition, precise ground geometry, and second‑lead design make it a practical, long‑term investment for workshops that tackle large‑diameter metric threading with confidence.