Page 158 - Threading_Handbook
P. 158
THREAD MILLING 7 Thread standard
ISO — ISO Metric
UN
— American UN
W
— Whitworth
BSPT — British Standard Pipe Thread
NPT — American National Pipe Thread
8 Grade
IC908, IC903, IC902
Main Advantages:
• Complete thread length by one axial pass
• Reduce cutting time due to large number of flutes relative to the endmill diameter
• Thread relief in the bottom of a blind hole is not required
• Same endmill used for right and left-hand thread
• Excellent surface finish
• Same endmill can be used for variety of materials
158 ISCAR