Crafted for reliable internal threading in metalwork, the Wiseman Threading Tools Metric Fine HSS Hand Tap Set ISO529 – M16x1.75 delivers precise, durable performance when you need clean, accurate threads. This ground high-speed steel hand tap set is uncoated for broad compatibility and general-purpose use, making it a versatile choice for workshops, garages, and professional machine shops alike.

• ISO 529 compliance ensures consistent metric fine threads, so your M16x1.75 holes thread true across a wide range of applications.
• Material and finish—high-speed steel (HSS) ground taps provide sharp, stable cutting edges; the absence of coating keeps friction predictable and easy to control with standard cutting fluids.
• Right-hand threads—designed for conventional clockwise tapping, ideal for most everyday threading tasks in metal.
• Three leads for complete tapping—taper, plug (second), and bottoming taps cover the full threading process from start to finish, making it possible to create full-depth internal threads in blind or through holes.
• Size and compatibility—M16x1.75 metric fine pitch, suitable for precision work in steel, aluminum, and other common metals used in fabrication and repair projects.
• Precision cutting edges—ground taps provide consistent chip removal and smoother finishes, reducing the risk of cross-threading and runout when used with proper lubrication.

This Wiseman set is ideal for:

• Repairing damaged internal threads in housings, brackets, and fixtures where a precise M16x1.75 thread is required.
• Crafting new threaded holes in soft metals like aluminum or brass, where a fine-pitched thread improves grip and load distribution.
• Maintenance and light production tasks in automotive, plumbing, or equipment fabrication where hand tapping offers flexibility and control.
• Hobbyist workshops and professional shops seeking reliable, repeatable results without investing in bulky CNC threading gear.

How to use this three-tap set effectively:

1. Drill an appropriately sized pilot hole for M16x1.75 (the exact drill size depends on the material and desired fit). Ensure the hole is straight and clean before tapping.
2. Begin with the taper tap to establish the thread profile and alignment. Use light, steady force and a slow, clockwise twist, advancing only a bit at a time to avoid wandering.
3. Switch to the plug (second) tap to deepen the thread, continuing to maintain perpendicular alignment and regular chip clearance.
4. Finish with the bottoming tap to reach full thread depth if you’re tapping a blind hole, then remove the taps with even, controlled turns.
5. Clean threads and apply a light threading oil or suitable lubricant to maximize tool life and thread quality.

Tips for best results:

• Keep the taps lubricated to reduce heat and prolong edge life, especially in tougher metals.
• Protect the thread line by starting gently and driving taps straight to avoid cross-threading.
• Wipe away chips regularly to prevent binding and ensure a clean, accurate thread.
• Store taps in a dry, organized container to preserve edge geometry and ease of use on future projects.

Why choose this Wiseman set? It combines purpose-built geometry with robust HSS ground taps that handle frequent tapping tasks with predictable results. The ISO529-mandated metric fine pitch ensures compatibility with a broad range of components, while the uncoated finish keeps cutting physics straightforward and easy to manage with standard shop lubricants. If you’re assembling or repairing assemblies that rely on precise M16x1.75 threads, this set provides the control, accuracy, and resilience your work demands.

Included in the hand tap set are the taper, plug (second), and bottoming taps—the complete trio needed to start, deepen, and finish internal threads in a variety of metalworking scenarios. For professionals and serious DIYers who value reliability and repeatable results, this Wiseman ISO529 metric fine hand tap set is a dependable tool you’ll reach for again and again.