Meet the Wiseman Threading Tools Taper Lead Machine Nut Metric HSS Tap in M4x0.7—the reliable workhorse for precise metric threading. This high-speed steel tap is ground for accuracy, uncoated for versatile cutting performance, and built to meet BS 949 dimensions. With a taper lead and a right-hand thread, it delivers smooth starts, consistent chip clearance, and clean, dependable threads every time.

Why this Wiseman tap stands out

• Precision-ground HSS provides consistent thread form and long-lasting cutting edges, even through tougher metals.
• Taper lead design eases starting alignment and reduces the risk of cross-threading, especially in thru-holes or deeper pockets.
• Uncoated finish offers straightforward lubrication compatibility and predictable cutting behavior across common cutting oils.
• BS 949 dimensions ensure standardized sizing for M4x0.7 threads, making replacement and compatibility straightforward in workshop setups.
• Right-hand thread aligns with standard tapping practices—turn clockwise to cut and thread, with conventional back-off to clear chips.

Ideal use cases

• Enclosures, brackets, and metric fastener assemblies where precise M4x0.7 threads are required.
• Prototyping and hobbyist projects as well as professional shop tasks where dependable, repeatable threads matter.

Practical tips for best results

• Use a compatible tapping lubricant to reduce heat buildup and extend tool life.
• Start with a clean drilled pilot hole sized for M4x0.7 per BS 949 guidelines, then proceed with a steady, clockwise rotation.
• Keep the tap square to the workpiece and back off periodically to break chip buildup and prevent binding.
• For deeper holes, take light passes and maintain gentle pressure to preserve thread integrity and accuracy.

What you can expect

The Wiseman M4x0.7 taper lead tap is built for dependable, repeatable threads that fit standard metric nuts and components. It’s a versatile, general-purpose tool designed to perform consistently across common workshop materials, making it a staple in any threading toolbox.