Wiseman Threading Tools Hand Tap - Taper Lead Tap - +0.015 Tolerance - M16x2The Wiseman Threading Tools Hand Tap Taper Lead Tap with +0. 015 tolerance is built for precision when creating internal threads by hand. This tap combines a thoughtful taper lead with a finely tuned tolerance to deliver accurate, repeatable results in metalworking projects where thread quality matters. The +0. 015 tolerance helps ensure a reliable bite and a snug fit with the mating bolt, reducing the chance of loose engagements or overtightening.