Operation Manual

HEIDENHAIN MANUALplus 620 577
9.1 Thread pitch
Q = 16 NPT US taper pipe thread
Q = 17 NPTF US taper dryseal pipe thread
Q = 18 NPSC U.S. cylindrical pipe thread with lubricant
Thread
designation
Diameter
(in mm)
Thread pitch
Thread
designation
Diameter
(in mm)
Thread pitch
1/16“ 7,938 0,94074074 3 1/2“ 101,6 3,175
1/8“ 10,287 0,94074074 4“ 114,3 3,175
1/4“ 13,716 1,411111111 5“ 141,3 3,175
3/8“ 17,145 1,411111111 6“ 168,275 3,175
1/2“ 21,336 1,814285714 8“ 219,075 3,175
3/4“ 26,67 1,814285714 10“ 273,05 3,175
1“ 33,401 2,208695652 12“ 323,85 3,175
1 1/4“ 42,164 2,208695652 14“ 355,6 3,175
1 1/2“ 48,26 2,208695652 16“ 406,4 3,175
2“ 60,325 2,208695652 18“ 457,2 3,175
2 1/2“ 73,025 3,175 20“ 508 3,175
3“ 88,9 3,175 24“ 609,6 3,175
Thread
designation
Diameter
(in mm)
Thread pitch
Thread
designation
Diameter
(in mm)
Thread pitch
1/16“ 7,938 0,94074074 1“ 33,401 2,208695652
1/8“ 10,287 0,94074074 1 1/4“ 42,164 2,208695652
1/4“ 13,716 1,411111111 1 1/2“ 48,26 2,208695652
3/8“ 17,145 1,411111111 2“ 60,325 2,208695652
1/2“ 21,336 1,814285714 2 1/2“ 73,025 3,175
3/4“ 26,67 1,814285714 3“ 88,9 3,175
Thread
designation
Diameter
(in mm)
Thread pitch
Thread
designation
Diameter
(in mm)
Thread pitch
1/8“ 10,287 0,94074074 1 1/2“ 48,26 2,208695652
1/4“ 13,716 1,411111111 2“ 60,325 2,208695652
3/8“ 17,145 1,411111111 2 1/2“ 73,025 3,175
1/2“ 21,336 1,814285714 3“ 88,9 3,175
3/4“ 26,67 1,814285714 3 1/2“ 101,6 3,175
1“ 33,401 2,208695652 4“ 114,3 3,175
1 1/4“ 42,164 2,208695652