The Wiseman Threading Tools Second Lead Metric HSS Tap, Right Hand - M18x1.5, is built for precision threading in a wide range of metals. Ground high-speed steel and an uncoated finish deliver dependable cutting edges, stable geometry, and excellent chip control for clean, accurate threads. Designed to ISO 529 dimensions with a right-hand thread, this tap provides reliable performance for general-purpose tapping jobs in everyday machining and repair work.

Why this tap stands out

• : A two-start thread profile increases advance per revolution, enabling faster thread formation and reducing tapping torque for less operator fatigue.
• Metric accuracy, ISO standard: Matches ISO 529 dimensions, ensuring compatibility with standard metric holes and predictable results across compatible tooling setups.
• HSS ground, uncoated: A sharp, precise edge provides consistent cutting action in a variety of materials, with easier re-sharpening and broad applicability in general machining.
• Right-hand thread, M18x1.5: A common, versatile thread form suitable for a broad spectrum of assemblies and components in automotive, machinery, and fabrication projects.

Ideal applications and use cases

• Threading holes in mild steel, aluminum, brass, and cast iron for brackets, housings, and fastener assemblies.
• Repairs and maintenance on equipment where quick, reliable internal threads are needed.
• Prototyping or hobbyist projects that require accurate metric threads without specialized tooling.

How to get the best results

1. Choose the correct pre-drilled hole size according to ISO 529 guidance for M18x1.5 threads, using a sharp center drill and piloted entry.
2. Lubricate with an appropriate cutting fluid to reduce heat and improve chip evacuation.
3. Align the tap perpendicular to the workpiece and start slowly, applying steady, even pressure while turning clockwise.
4. Advance in small increments, breaking chips with occasional reverse turns to prevent binding.
5. Remove and clean periodically to maintain a smooth cutting action and extend tap life.

Care, maintenance, and longevity

• Keep the tap clean and dry after use to prevent corrosion on the uncoated surface.
• Store in a dry, organized tool chest or case to protect the precision cutting edges from impact damage.
• Resharpen as needed with appropriate tooling to maintain optimal geometry for future jobs.