HEIDENHAIN CNC Pilot 4290 - Manual (Page 444)

11 Tables and overviews 432
Q=16 NPT US taper pipe thread
Thread diameter Thread
designation (in mm) pitch
1/16“ 7.938 0.94074074
1/8“ 10.287 0.94174074
1/4“ 13.716 1.411111111
3/8“ 17.145 1.411111111
1/2“ 21.336 1.814285714
3/4“ 26.67 1.814285714
1“ 33.401 2.208695652
1 1/4“ 42.164 2.208695652
1 1/2“ 48.26 2.208695652
2“ 60.325 2.208695652
2 1/2“ 73.025 3.175
3“ 88.9 3.175
3 1/2“ 101.6 3.175
4“ 114.3 3.175
5“ 141.3 3.175
6“ 168.275 3.175
8“ 219.075 3.175
10“ 273.05 3.175
12“ 323.85 3.175
14“ 355.6 3.175
16“ 406.4 3.175
18“ 457.2 3.175
20“ 508.0 3.175
24“ 609.6 3.175
Q=17 NPTF US taper dryseal pipe thread
Thread diameter Thread
designation (in mm) pitch
1/16“ 7.938 0.94174074
1/8“ 10.287 0.94174074
1/4“ 13.716 1.411111111
3/8“ 17.145 1.411111111
1/2“ 21.336 1.814285714
3/4“ 26.67 1.814285714
1“ 33.401 2.208695652
1 1/4“ 42.164 2.208695652
1 1/2“ 48.26 2.208695652
2“ 60.325 2.208695652
2 1/2“ 73.025 3.175
3“ 88.9 3.175
Q=18 NPSC US cylindrical pipe thread with
lubricant
Thread diameter Thread
designation (in mm) pitch
1/8“ 10.287 0.94174074
1/4“ 13.716 1.411111111
3/8“ 17.145 1.411111111
1/2“ 21.336 1.814285714
3/4“ 26.67 1.814285714
1“ 33.401 2.208695652
1 1/4“ 42.164 2.208695652
1 1/2“ 48.26 2.208695652
2“ 60.325 2.208695652
2 1/2“ 73.025 3.175
3“ 88.9 3.175
3 1/2“ 101.6 3.175
4“ 114.3 3.175
Q=19 NPFS US cylindrical pipe thread without
lubricant
Thread diameter Thread
designation (in mm) pitch
1/16“ 7.938 0.94174074
1/8“ 10.287 0.94174074
1/4“ 13.716 1.411111111
3/8“ 17.145 1.411111111
1/2“ 21.336 1.814285714
3/4“ 26.67 1.814285714
1“ 33.401 2.208695652
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