Meet the Wiseman Threading Tools Bottom Lead Metric HSS Tap Right Hand - M30x3, a precision internal-threading solution engineered for dependable, clean threads in metalworking projects. This high-speed steel (HSS) ground tap delivers consistent performance across a range of common materials, making it a reliable choice for professional fabrication and DIY repairs alike.

Precision you can trust

• Right-hand thread orientation matches standard machining and joint assemblies, ensuring predictable thread formation and compatibility with common fasteners.
• M30x3 sizing provides a robust, coarse metric thread for larger components, delivering strong load paths and reliable engagement.
• Bottom lead design guides the tap smoothly into the workpiece, reducing wandering and helping you start the cut cleanly in deeper holes or through-holes.
• HSS ground, uncoated for general-purpose use with a broad range of cutting fluids. The uncoated finish enhances compatibility with lubricants and minimizes stick-slip in clean metals.
• ISO 529 compliant dimensions ensure consistent thread geometry and compatibility with standard tapping practices across industries.

What this tap is ideal for

Designed for internal threading on metal components, this M30x3 tap excels in steel, cast iron, aluminum, and non-ferrous alloys. It’s a workhorse for rebuilding machinery housings, fabricating custom brackets, or repairing thread revolutions in automotive and industrial parts. Whether you’re upgrading a fixture, repairing a worn thread, or producing a new assembly, this tap provides the dependable thread form needed for precise fits.

How to use for best results

• Drill the pilot hole to the standard size recommended for M30x3 tapping, using proper drilling speed and lubrication for the material.
• Chamber the tap straight to the hole to prevent cross-threading; apply a suitable cutting fluid to reduce friction and heat build-up.
• Turn the tap gradually with steady pressure, reversing slightly to break chips and prevent binding. Clean chips and re-lubricate as needed for a smooth cut.
• Finish with a light pass to ensure a clean, uniform thread and remove any residual chips before assembly.

Why choose Wiseman for your threading tasks

Wiseman threading tools are built for durability and precision. The combination of an M30x3 right-hand thread, bottom lead geometry, and uncoated HSS construction delivers reliable performance across a variety of materials and applications. This tap is designed to maintain thread integrity under repeated use, resist wear in standard workshop environments, and produce consistent thread depth and pitch accuracy that you can trust in critical assemblies.

Specifications at a glance

• Thread type: Right-hand
• Size: M30x3
• Lead: Bottom lead
• Material: High-speed steel (HSS), ground
• Coating: Uncoated
• Standards: ISO 529 dimensions
• Applications: Internal threading for metalwork and fabrication
• Brand: Wiseman