The Wiseman Threading Tools Second Lead Metric HSS Tap Left Hand - M36x1.5 is a purpose-built cutting tool engineered for accurate, repeatable metric left-hand threading. Crafted from high-speed steel and precision ground, this tap brings dependable performance to metalworking projects where left-handed threads are required or preferred for reverse-fitting, vibration resistance, or quick-release assemblies.

Precise, standards-based geometry

Designed to ISO 529 specifications, this tap delivers consistent thread form and pitch across the full cutting length. The M36x1.5 size denotes a 36 mm major diameter with a 1.5 mm pitch, making it a robust choice for larger-diameter left-hand threading tasks in steel, alloy, or other machinable metals. The second lead configuration enhances cutting action, promoting smoother entry and more efficient material removal on every pass.

Uncoated versatility you can trust

Uncoated HSS provides predictable tool-life in a wide range of lubricants and cutting conditions. This isn’t a single-purpose coating play—it’s a straightforward, reliable tool that behaves consistently in everyday shop environments. The uncoated surface also offers easy inspection for wear and chatter, helping you decide when to re-sharpen or replace.

Who benefits from this left-hand tap

• Machinists and hobbyists tackling left-handed threads in large-diameter assemblies where back-torque must be controlled or removed by turning the part rather than the tap.
• Repair and maintenance teams working on equipment that uses left-hand fasteners, especially where reverse-threaded fittings prevent loosening under operation.
• Fabricators building or restoring machinery, hydraulics, or reservoirs that require precise M36x1.5 left-hand taps with a robust lead for reduced threading effort.

Practical use and best-practice tips

• Prepare with a properly sized pilot hole to match ISO 529 recommendations for M36x1.5; accurate pilot drilling minimizes chatter and improves thread definition.
• Use a high-quality cutting fluid or lubricant suited to the metal being threaded to extend tap life and achieve cleaner threads.
• Secure the workpiece and back off gently after each full thread pass to break the chip and prevent over-cutting or binding.
• Work at a measured tapping speed and maintain steady alignment to ensure true thread form and dimensional accuracy.
• Pair with a compatible tap wrench or machine tapping setup designed for larger-diameter taps to maximize control and reduce tool deflection.

Why this Wiseman tap stands out

Most general-purpose taps deliver the cut—this Wiseman tool is purpose-built for left-hand threads on a larger metric size, with a second-lead geometry that accelerates material removal without sacrificing thread quality. Its ISO 529-compliant geometry ensures interoperability with standard dies, nuts, and threaded components, making it a reliable addition to professional shops and serious hobbyist setups alike.

Technical snapshot

• Material: High-speed steel (HSS), ground for precision
• Coating: Uncoated
• Thread type: Left-hand
• Lead: Second lead
• Size: M36 x 1.5 (metric, ISO 529)
• Lead configuration: USA plug lead configuration

Equip your workshop with a left-hand threading tool that combines robust construction, precise geometry, and practical design. The Wiseman Second Lead Metric HSS Tap Left Hand - M36x1.5 is built to deliver consistent performance across demanding projects, helping you achieve secure, accurately formed left-handed threads with confidence.