Introducing the Wiseman Threading Tools Bottom Lead Metric HSS Tap Right Hand - M56x5.5, a precision-ground tapping solutions designed for robust metric threading in metal. This high-speed steel (HSS) tap is uncoated and built for general-purpose use, adhering to ISO 529 dimensions to ensure reliable, consistent thread forms in demanding machining environments.

Key advantages that set this Wiseman tap apart

Bottoming lead means the thread is cut to near the bottom of a blind hole, delivering full-thread engagement where you need it most—critical for securing components with maximum grip depth. The ground edges provide clean, precise cuts with reduced work hardening, while the uncoated surface invites efficient lubrication with cutting oil, yielding smoother starts, fewer chips, and longer tool life in tougher materials.

• M56 x 5.5 — a metric thread with a 5.5 mm pitch, suitable for heavy-duty fastener applications.
• Right-hand threaded for standard installation in most assemblies.
• Bottoming lead (bottoming tap) for full-thread engagement in blind holes and deep threads.
• High-speed steel, ground for sharp, accurate flanks; uncoated to maximize cutting oil compatibility.
• ISO 529-compliant thread form ensures consistent dimensions and compatibility with metric components.
• Ideal for through-holes and blind-holes in steel, cast iron, and other common metals encountered in machining, repair, and fabrication tasks.

Who benefits most from this tap? machinists, toolmakers, and maintenance technicians tackling large-diameter metric threads or performing thread repair in industrial equipment. It’s particularly effective when you need to recreate a precise, load-bearing thread depth in thick workpieces or when restoring a threaded hole that has been damaged or worn.

Practical tips to maximize performance: use a quality cutting fluid or oil to reduce friction, back off slightly after each partial rotation to break chips, and work with a compatible tap wrench to maintain alignment. Start with a precut hole that matches the recommended tapping depth, then advance smoothly to achieve a clean, accurate thread profile that mates perfectly with your M56x5.5 fasteners.

In short, the Wiseman Bottom Lead Metric HSS Tap Right Hand - M56x5.5 combines precise ISO 529 threading, durable HSS construction, and a bottoming lead design to deliver dependable, deeper metric threads in a wide range of metalworking projects. If you’re machining large-diameter metric holes or restoring critical fastener threads, this tap provides the control, durability, and results you count on in the shop.