Operation Manual

HEIDENHAIN CNC PILOT 4290 693
11.1 Undercut and Thread Parameters
Q = 19 NPFS U.S. cylindrical pipe thread without lubricant
Thread
designation
Diameter
(in mm)
Thread pitch
Thread
designation
Diameter
(in mm)
Thread pitch
1/16“ 7.938 0.94074074 1/2“ 21.336 1.814285714
1/8“ 10.287 0.94074074 3/4 26.67 1.814285714
1/4“ 13.716 1.411111111 1“ 33.401 2.208695652
3/8“ 17.145 1.411111111