Thread pitch, 1 th re ad pitc h – HEIDENHAIN SW 54843x-02 User Manual
Page 573
HEIDENHAIN MANUALplus 620
573
9.1 Th
re
ad
pitc
h
Thread pitch
Q = 2 Metric ISO thread
Q=12 Nonstandard thread
–
–
–
–
–
Q=13 UNC US coarse thread
External
*
0.61343*F
F
30°
30°
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