Wiseman Threading Tools Second Lead Metric HSS Tap Right Hand - M16x1.5 is a purpose-built tapping solution for professionals who value speed without compromising thread integrity. This uncoated, general‑purpose tap is ground from high-speed steel to deliver dependable cutting action across a range of common metals, making it a reliable workhorse in both shop and field environments. Designed for metric threading with ISO 529 conformity, this tap features a right-hand thread and a second lead (two-start) configuration. The second lead lets you advance the tap with fewer revolutions, speeding up longer holes and reducing cycle time while maintaining accurate pitch and clean chatter-free threads. It’s particularly beneficial for through-holes where consistent alignment and quick metal removal matter most. Key advantages: - Second lead two-start design for faster tapping and improved hole-filling efficiency, ideal for production runs and repair work. - Ground high-speed steel (HSS) provides a sharp cutting edge, durability, and the ability to withstand repeated use in common workshop materials. - Uncoated finish ensures predictable cutting behavior with standard cutting fluids and makes it easy to re-sharpen or touch up as needed. - ISO 529 standard dimensions guarantee compatibility with other metric tooling and taps, reducing setup time and ensuring reliable thread form. - Right-hand thread for universal compatibility with most fasteners and assemblies, suitable for through-holes in steel, aluminum, brass, and similar materials. - USA plug lead design enhances compatibility with American tooling setups and common tap wrenches, supporting straightforward installation and use. Who this is for: - Machinists and hobbyists who need fast, dependable metric threads (M16x1.5) in everyday projects. - Shops performing routine maintenance or rethreading tasks where throughput matters as much as thread quality. - Individuals seeking a versatile, general-purpose tap that works well with a variety of materials when paired with proper lubrication. Usage tips: - Use a compatible tap wrench or drilling/tapping machine to maintain straight alignment; a pilot hole of appropriate size is crucial for clean threads. - Apply a steady feed and cutting fluid or tapping oil to reduce heat and extend tool life. - Clear chips regularly to prevent binding and ensure a smooth cutting action through the entire thread depth. - After tapping, back the tap out gently to break the chip and inspect the thread engagement for uniformity. This Wiseman tap is a practical addition to any toolkit where dependable metric threading is needed, delivering efficient performance, repeatable results, and a straightforward workflow from hole prep to finished thread.