MT-NPS : External & internal NPS (American Standard Straight Pipe Thread) full profile thread milling inserts. Used for mechanical joining and pipe fittings.
  DesignationTPIlWSGICATGIREMgiicGrade
  MT12 18 NPS   18.012.006.302.905606966 Insert with one cutting edge. 1IC908 
  MT14 18 NPS 18.014.007.503.105607011 1IC908 
  MT14 14 NPS 14.014.007.503.105607005 1IC908 
  MT21 14 NPS 14.021.0012.004.705607055 1IC908 
  MT21 11.5 NPS 11.521.0012.004.705607050 1IC908 
  MT30 11.5 NPS 11.530.0016.005.515607096 1IC908 
  MT30 8 NPS 8.030.0016.005.515607103 1IC908 
  MT40 11.5 NPS 11.540.0020.006.305607138 1IC908 
  MT40 8 NPS 8.040.0020.006.305607142 1IC908 

The same insert for external & internal thread.
For cutting speed recommendations, Click on "More Info".

For cutting speed recommendations, click on the required grade number related to specific item geometry