Page 158 - Threading_Handbook

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