Meet the Wiseman Threading Tools Spiral Point Metric HSS Tap Left Hand - M7x1, a purpose-built tool for precise internal threading in metal parts. This high-speed steel tap is ground for accuracy, uncoated for broad material compatibility, and engineered to ISO 529 dimensions so you can trust repeatable results across projects.

Key features that matter in real work

• Left-hand thread design: Specifically crafted to create reverse-threaded features, making it ideal for assemblies that use left-handed fasteners or reverse-operating components.
• Spiral point (gun nose) geometry: The forward-shooting point concentrates cutting pressure ahead of the tap and pushes chips out of the hole, reducing binding and improving feed in through-holes.
• High-speed steel, ground, uncoated: A tough, sharp cutting edge that performs reliably in a range of metals without the interference of coatings.
• Metric precision, M7x1, ISO 529: Consistent dimensions and thread pitch ensure clean, accurate threads that fit standard metric components.
• Versatile application: Perfect for repair work, prototyping, or production tasks where a left-hand internal thread is required.

Use cases and practical tips

Whether you’re working on automotive repairs, machinery maintenance, or fabricating a custom part with a reverse thread, this tap delivers reliable results. For best outcomes, prepare a clean tapping hole with an appropriate drill size, secure the workpiece, and apply a quality tapping fluid to minimize friction. Begin turning counterclockwise to engage the left-hand threads, maintaining steady pressure and consistent speed. Periodically back the tap out to clear chips, then continue until the full M7x1 thread is formed. The spiral point helps keep chips moving forward in through-holes, while careful cutting and lubrication reduce the risk of chatter or breakage.

Who benefits from this Wiseman tap

• Machinists and technicians repairing or fabricating left-hand threaded components.
• Engineers prototyping assemblies that rely on reverse-threaded fasteners.
• Hobbyists tackling metalworking projects that demand durable, precision threading tools.

Care and maintenance for long performance

Keep the tap clean and dry when not in use, store it in a protective holder, and avoid forcing it through material. Use proper lubrication during tapping to extend life and maintain sharpness. Replace when the cutting edges no longer seat cleanly in threads to ensure consistent results on future jobs.