Taps In this section make threads to: “S” or NIHS specifications. That includes ISO 1501 “S” Metric System Right Hand sizes M.5 to M1.4 also called Horological (watch) series N.I.H.S. 06-02
These "S" series Taps are authentic and stocked in the United States. Stocked sizes are: S 0.50, S 0.60, S .70, S 0.80, S .90, S 1.0, S 1.20, and S1.40 To check specific stock please email us most sizes are carried in plug style in HSS and or HSS w/ Tin, we have some in bottoming style also. Please note starting in 2017 Part numbers beginning with "0" zero the zero is deleted.