Meet the Wiseman Second Lead Metric HSS Tap, Right Hand - M35x1.5, a precision-ground threading tool built to deliver repeatable, accurate internal threads with dependable longevity. Designed for general purpose tapping, it’s the workhorse you reach for when reliability matters in metalworking tasks.

• Thread specification: M35x1.5 metric thread for heavy-duty holes where a robust, lower-pitch option is required.
• Second-lead design: Two-start (second lead) geometry speeds up the tapping action, improves chip clearance, and reduces tool life cycle when drilling thicker stock or running production quantities.
• Material and finish: High-speed steel (HSS) ground tap, uncoated for compatibility with cutting fluids and straightforward maintenance; built to handle multiple taps in a single setup.
• Standards and compatibility: ISO 529 dimensions ensure clean alignment with standard metric holes, making it a dependable choice for shops and home workshops alike.
• Thread direction: Right-hand thread — the default orientation for most general-purpose tapping tasks and assemblies.
• Lead format: USA plug lead configuration supports common tapping rigs and chucks used in U.S. machine shops.

This Wiseman tap is ideal for machinists, metal fabricators, and serious hobbyists who need a capable tool for drilling and threading thick materials like steel and cast iron, as well as appropriate aluminum workpieces with proper lubrication. The combination of M35x1.5 geometry and the second-lead design delivers quicker start-up, smoother thread formation, and reliable performance across a range of applications — from repair work to production runs.

Practical usage insights

• Pair with a quality cutting fluid to minimize heat buildup and extend tool life.
• Ensure the hole is properly deburred and aligned before starting to tap to avoid cross-threading.
• Apply steady, even pressure and advance the tap with a tapping wrench or machine tap handle; back out regularly to clear chips.
• For deeper holes, back-tap periodically to prevent chip binding and maintain consistent thread quality.