Wiseman Threading Tools Spiral Point Metric HSS Tap Right Hand - M25x1.5 is a high-performance ground HSS tap built for precision metric threading in through-holes. Uncoated for flexibility with common cutting oils and machine environments, this right-hand thread tap follows ISO 529 dimensions to deliver consistent, dependable results every time.

• Spiral Point (Gun Nose) geometry drives chips forward as you cut, reducing chip packing and enabling efficient threading in through-holes. This makes it ideal for production runs and repeatable work where speed and cleanliness matter.
• Right-hand thread designed for standard metric threads; straightforward to use in most common machining setups and aligns with conventional fastener conventions.
• Metric designation M25x1.5 ensures compatibility with widely used metric fasteners and threaded components, enabling reliable assembly and interchangeability.
• ISO 529 dimensions guarantee a consistent thread form and seat, so this tap works smoothly with corresponding dies, nuts, and jigs that adhere to the same standard.
• High-speed steel (HSS) ground finish delivers durability at higher cutting speeds and feeds, providing a balance between longevity and precision for everyday threading tasks.
• Uncoated surface offers greater compatibility with cutting oils and coolants, reducing friction and allowing easy cleaning after use.
• Versatile use cases—excellent for through-holes in steel, cast iron, and various aluminum alloys, making it a dependable choice for workshops, fabrication shops, and DIY projects that demand metric threads.

Why this Wiseman tap stands out: the spiral point design accelerates production threading by efficiently evacuating chips and maintaining a clean thread profile, even at higher speeds. The combination of precise ISO 529 geometry, a robust HSS core, and the gun-nose starting point reduces runout and maximizes first-pass accuracy. Whether you’re setting up a new fixture, performing quick iterations, or finishing up a batch of parts, this tap delivers consistent results with less rework.

Practical tips for best results

• Always select the drill size appropriate for your M25x1.5 thread per ISO charts, and use a sharp, well-maintained drill to ensure clean entry.
• Apply a suitable cutting fluid or oil to reduce heat, extend tool life, and improve chip flow through the spiral point.
• Start the tap square to the workpiece to prevent thread misalignment; use a tapping guide or drill press for accuracy in through-holes.
• Reverse slightly after full depth to break the chips and avoid binding, then back the tap out smoothly for a clean finish.
• Store taps with protective caps or in a dedicated case to preserve the precision of the flutes and edges.

This tap is an excellent fit for professionals and serious hobbyists who value reliable metric threading without compromise. With Wiseman, you get a tool that balances precision, durability, and practical performance for everyday through-hole machining tasks.