Thread pitch, 1 under c ut and thr ead p a ra met e rs – HEIDENHAIN CNC Pilot 4290 V7.1 User Manual
Page 688
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1
1
.1 Under
c
ut and Thr
ead P
a
ra
met
e
rs
Thread pitch
Q = 2 Metric ISO thread
Internal
*
0.54127*F
F
30°
30°
Q=14 UNF US fine-pitch thread
External
*
0.61343*F
F
30°
30°
Internal
*
0.54127*F
F
30°
30°
Q=15 UNEF U.S. extra-fine-pitch thread
External
*
0.61343*F
F
30°
30°
Internal
*
0.54127*F
F
30°
30°
Q=16 NPT U.S. taper pipe thread
External
*
0.8*F
F
30°
30°
Internal
*
0.8*F
F
30°
30°
Q=17 NPTF U.S. taper dryseal pipe thread
External
*
0.8*F
F
30°
30°
Internal
*
0.8*F
F
30°
30°
Q=18 NPSC U.S. cylindrical pipe thread with lubricant External
*
0.8*F
F
30°
30°
Internal
*
0.8*F
F
30°
30°
Q=19 NPFS U.S. cylindrical pipe thread without
lubricant
External
*
0.8*F
F
30°
30°
Internal
*
0.8*F
F
30°
30°
Thread type Q
F
P
R
A
W
Diameter
Thread pitch
Diameter
Thread pitch
Diameter
Thread pitch
1
0.25
6
1
27
3
1.1
0.25
7
1
30
3.5
1.2
0.25
8
1.25
33
3.5
1.4
0.3
9
1.25
36
4
1.6
0.35
10
1.5
39
4
1.8
0.35
11
1.5
42
4.5
2
0.4
12
1.75
45
4.5
2.2
0.45
14
2
48
5
2.5
0.45
16
2
52
5
3
0.5
18
2.5
56
5.5
3.5
0.6
20
2.5
60
5.5
4
0.7
22
2.5
64
6
4.5
0.75
24
3
68
6
5
0.8