The Wiseman Threading Tools Bottom Lead Metric HSS Tap Left Hand - M18x1 is a precision, general-purpose tapping solution designed for reliable left-hand threading in metalworking projects. Ground from high-speed steel and uncoated for broad compatibility, this tap delivers steady performance across a range of materials while maintaining exact ISO 529 dimensions.

• Left-hand thread: specifically engineered to cut reverse threads, ideal for applications where a left-hand fastener or reverse-rotation assembly is required.
• Bottom lead design: starting geometry that promotes clean engagement and smoother cutting progression, helping to reduce cross-threading and chatter in deeper holes.
• High-speed steel (HSS), ground finish: delivers sharp chisel-edge geometry for efficient material removal and long tool life in common metals.
• Uncoated, general purpose: versatile for use with standard cutting fluids and in a wide range of shop conditions without the need for special coatings.
• Metric, ISO 529 compliant: M18x1 thread form that aligns with industry standards, ensuring compatibility with compatible fixtures, taps, and components.

Designed for machinists, fabricators, and repair technicians, this left-hand tap is perfect for installing or repairing components that require reverse-threaded fasteners, such as certain mechanical housings, gear assemblies, and specialized fittings. Its robust HSS construction and bottom lead geometry make it a dependable choice for both new work and maintenance tasks where precise, repeatable threads are essential.

Practical tips for best results: use an appropriate tapping fluid to reduce friction, start the hole with a correctly sized pilot or drill bit, and back off intermittently to clear chips. This approach helps extend tool life and maintains thread accuracy in demanding materials.

Equip your workshop with the Wiseman left-hand thread tap to handle reverse-threaded projects with confidence.