Introducing the Wiseman Threading Tools Metric Fine HSS Hand Tap Set ISO529 — M42x1.5, a purpose-built solution crafted for dependable, precise threading in metalwork. Designed for hand tapping, this uncoated high-speed steel set delivers clean, accurate threads with every pass.

What makes this set stand out

• ISO 529 compliant means consistent thread forms across the set, so you can trust compatibility with metric fasteners and mating parts in your project.
• Metric fine pitch with an M42x1.5 specification provides strong, high-precision threads ideal for high-load assemblies and finely threaded components.
• Three-lead progression: bottom, second, and taper taps guide the cutting process from entry to full-depth, reducing effort, minimizing tap breakage, and delivering reliable results even when working by hand.
• Right-hand thread orientation mirrors the vast majority of everyday fastener applications, making it immediately usable in most repairs and fabrications.
• Ground HSS, uncoated for durability and re-sharpening potential, with compatibility across common metals when used with proper lubrication or tapping oil.

Ideal use cases

Perfect for creating or repairing M42x1.5 threaded holes in steel and other engineering metals. Whether you’re fabricating a machine frame, servicing heavy equipment, or tackling a precision automotive bracket, this Wiseman hand tap set provides dependable performance in a compact, hand-tool-friendly package.

Practical tapping guidance

Prepare the hole with a suitable pilot size, apply a light tapping fluid, and keep the tap aligned perpendicular to the workpiece. Begin with the taper lead to ease entry, progress through the second lead for depth, and finish with the bottoming lead to achieve full thread depth. After each pass, reverse slightly to break chips, then clean the threads and cruise to a precise finish. Store the taps in a dry environment to preserve edge life.