Wiseman Threading Tools Spiral Flute Tap - +0.002 Tolerance - M4x0.7Wiseman Threading Tools Spiral Flute Tap M4x0. 7 with +0. 002 tolerance is a precision internal threading solution designed for reliable, repeatable results in tight workspaces. The spiral flute geometry actively evacuates chips as you cut, helping keep the hole clear and the thread crisp. This design reduces chip packing and binding, so you can tackle multiple holes with consistent accuracy. Chip management is a cornerstone of quality threads, and