Meet the Wiseman Threading Tools Bottom Lead Machine Nut Metric HSS Tap - M4x0.7. Built for precision threading right out of the box, this high-speed steel ground tap delivers consistent results across common metalworking materials, guided by BS 949 dimensions for reliable interoperability with standard tooling.

Why this tap excels

• High-speed steel, ground finish, uncoated: A tough, versatile tap finish that performs well in steel, aluminum, brass, and other machinable metals, with clean flank geometry that reduces chatter and chatter-induced threading errors.
• Metric M4 x 0.7 thread, right-hand: Standardized size and pitch that fit a wide range of assemblies and fasteners, making it a dependable choice for repairs, prototypes, and production runs.
• Bottom lead design for machine tapping: Optimizes entry and chip evacuation in machine-assisted tapping, helping you achieve straight, true threads with minimal effort.
• BS 949 dimensions: Conforms to established British standard dimensions, ensuring compatibility with other taps, dies, and tooling in professional workshops.
• Through-hole ready, consistent results: Ideal for producing clean internal threads in holes drilled to standard tapping sizes; typically paired with a tapping drill around the 3.3 mm range for M4 x 0.7, per tapping charts.

Practical use tips: secure your workpiece, maintain alignment throughout the cut, apply a light cutting fluid or tapping oil, and feed smoothly to avoid thread pull-out. When you reach depth, back off slightly to break chips and prevent binding, then finish with a gentle reverse to clear the flutes.

Who will benefit

Perfect for hobbyists, machine shops, and maintenance teams that require dependable metric threads in metal parts. Whether you’re repairing a stripped threaded hole, fabricating a small component, or prototyping a new enclosure, this M4x0.7 tap delivers reliable performance with every use.

What makes it different

Unlike generic, off-the-shelf options, this Wiseman tap emphasizes precision through a grounded HSS process and a bottom-lead configuration designed for machine environments. The uncoated finish broadens material compatibility, while BS 949 alignment ensures predictable compatibility with other standard taps and tooling in your kit.

Care and longevity: after use, remove chips, wipe clean, and store in a dry place. Regular inspection of the cutting edges helps prevent degraded thread quality, and replacing worn taps keeps your projects precise and efficient.