Wiseman Threading Tools Spiral Flute Tap — +0.001 Tolerance, M4x0.7 Precision internal threading tool designed for dependable, repeatable results in compact fasteners and small components. Built to deliver tight tolerances and clean, accurate threads, this spiral flute tap is a go-to choice for anyone doing precision metalwork.

The spiral flute design excels at chip evacuation, pulling chips out of the hole as you cut. This reduces clogging, minimizes feed resistance, and helps prevent thread damage when you’re threading deeper holes or working in challenging materials. With a +0.001 tolerance, you get remarkably consistent thread dimensions across production runs, making it ideal for assemblies that demand high accuracy and reliable fit.

The Wiseman spiral flute tap is constructed from durable, high-quality materials, engineered to withstand the rigors of demanding machining environments. It provides steady performance whether you’re threading in a workshop, a machine shop, or a production line, and it pairs well with both manual tapping and CNC-assisted processes.

Key features at a glance

• Thread size and pitch: M4x0.7
• Tolerance: +0.001 for precise, repeatable threads
• Spiral flute geometry for efficient chip evacuation and reduced binding
• Durable construction for longevity in tough machining applications
• Suitable for internal threads in a range of metals, from soft alloys to harder steels

Why this matters In small assemblies, thread accuracy and clean engagement are crucial. The spiral flute tap minimizes chip buildup and provides a smooth cutting action, helping you achieve thread integrity on sensitive components, fasteners, and housings without rework. This makes it a reliable choice for repair work, prototype builds, and production tasks where exact thread fit is non-negotiable.

Practical guidance Use appropriate cutting fluid to maximize tool life, and maintain a steady, controlled feed. Start with a lighter pass to establish alignment, then advance with measured steps to maintain consistent thread quality. Pair with the correct pilot hole and you’ll notice fewer thread defects and more uniform engagement across parts.