Introducing the Wiseman Threading Tools Bottom Lead Metric HSS Tap Left Hand - M20x2—a purpose-built tool designed for precision threading in metalwork. This High Speed Steel (HSS) ground thread tap is uncoated and general purpose, built to deliver accurate M20x2 threads in a left-hand configuration. With ISO 529 dimensions, it fits standard left-hand thread applications and ensures compatibility with widely used metric hardware.

The left-hand design means you’ll cut threads that tighten in reverse, a common requirement in anti-loosening assemblies or systems where reverse-thread fasteners are used to counteract vibration. The bottom lead geometry is optimized for deeper engagement, enabling efficient threading in blind holes when used with the proper pre-drilled hole and drill/tap combination.

• Left-hand M20x2 thread for reverse-tightening applications and anti-rotation setups in mechanical assemblies.
• Bottoming lead designed to reach near-full thread depth in a single passing stroke when paired with the correct pre-drilled hole.
• ISO 529 compliant dimensions ensure consistent fit with standard M20x2 fasteners and taps.
• HSS ground tap offers robust performance across metals such as steel, cast iron, and many non-ferrous alloys with proper lubrication.
• Uncoated versatility provides reliable cutting action across a range of tooling environments without coating-related effects.
• Practical guidance—rotate counterclockwise for left-hand threading, apply appropriate cutting fluid, and use a steady, moderate feed to minimize heat and binding.

Ideal for fabricators, workshop technicians, and serious DIY enthusiasts, this Wiseman tap empowers you to create precise, dependable left-hand threads that stay secure under load. When you need threads that resist loosening in demanding conditions, choose a tool built to exacting standards and backed by the Wiseman name in threading solutions.