The Wiseman Threading Tools Bottom Lead Metric HSS Tap Left Hand - M16x1 is a precision ground tap built for dependable metric threading in metal. With an uncoated surface and a left-hand thread, this tool is purpose-built for applications that require reverse-rotation fasteners or LH-threaded components, delivering clean, accurate results every time.

• Left-hand threading, precise LH taps: Specifically engineered to cut M16x1 left-hand threads, enabling secure reverse-rotation assemblies and confidently disassembling LH-threaded hardware without damage to the workpiece.
• Bottom lead design: The bottoming/threaded length engages deeply in the hole, producing threads that extend to the bottom of the bore for maximum engagement and strength in mid- to deep-depth applications.
• ISO 529 compliant: Manufactured to ISO 529 dimensions, ensuring consistent fit with standard drill sizes and reliable performance across tools and work setups.
• High-speed steel, ground, uncoated: HSS delivers rigidity and durability for repetitive tapping, while the uncoated finish reduces sticking in typical shop materials, offering dependable performance at a practical price point.
• General purpose, versatile: Suitable for steel, cast iron, and many alloys in both DIY projects and professional workshops where a LH thread is specified and a robust, long-lasting tap is needed.
• Practical compatibility: Designed to work with standard tap wrenches and compatible drilling setups, making it a reliable addition to any threading toolkit.

Use guidance for best results: select the appropriate pilot hole size for M16x1 LH threading, apply cutting fluid to reduce heat and improve chip evacuation, and advance the tap steadily with regular back‑off to break chips. For critical assemblies, verify thread engagement with a test fit before final assembly to ensure smooth operation and reliable fastening.