Wiseman Threading Tools Bottom Lead Metric HSS Tap Right Hand – M15x1.5

This is the trusted M15x1.5 bottoming tap from Wiseman Threading Tools—a precision cutting tool designed for robust internal threads in metalworking projects. Crafted from high-speed steel and ground to exacting tolerances, this tap delivers clean, consistent threads with every pass. It’s uncoated to maximize heat transfer and cutting efficiency, making it a dependable choice for a wide range of metals and applications.

Why this tap stands out

• Bottoming design (bottom lead): Eliminates shoulder gaps by threading all the way to the bottom of a hole. Ideal for blind holes and finishing full-depth internal threads with a single tool.
• High-speed steel, ground precision: A durable, stable cutting edge that yields smooth thread profiles and reduces the need for rework.
• Uncoated versatility: Absorbs cutting fluids effectively and is compatible with a broad spectrum of lubricants, helping you optimize chip evacuation and tool life.
• Right-hand thread aligned to standard internal threading operations, ensuring predictable results in everyday machining tasks.
• ISO 529 compliant dimensions: Sized to fit conventional metric thread standards, making it compatible with established sockets, holders, and workholding setups.

What you can do with this tap

Use this M15x1.5 right-hand, bottoming tap to create precise internal threads in steel, cast iron, aluminum, and other common metals. It’s perfectly suited for:

• Repairing stripped threads in machinery housings, brackets, and fixtures.
• Finishing deep internal threads in through-holes and blind holes where full-depth engagement is required.
• Replicating standard bolt patterns in repair or fabrication projects where a strong, repeatable thread is essential.

Practical use and care

To get the best results, pair the tap with appropriate cutting oil or thread-cutting fluid and keep the workpiece well secured. Start straight and true to prevent cross-threading, then maintain a steady, evenly-balanced cutting pace to minimize heat buildup. After tapping, lightly deburr the hole and wipe away chips to preserve a clean finish.

Ideal for

Metalworkers, machinists, hobbyists, and repair technicians who need reliable internal threads at metric sizes. This M15x1.5 tap is a versatile addition to any tap set, offering dependable performance for both production runs and on-demand repairs.

Maintenance tips

• Store in a dry environment to preserve the uncoated steel; wipe clean after use.
• Inspect the cutting edges for nicks before long jobs to avoid poor thread quality.
• Choose the right pilot hole size according to your material and thread spec, and use a gradual tapping approach for deeper holes.

With the Wiseman Threading Tools Bottom Lead Metric HSS Tap in M15x1.5, you gain a reliable, high-precision solution for internal threading tasks that demand depth, accuracy, and consistency—delivering professional results from first pass to finish.