TABLE I. Dash numbers and size. 1/ 2/
Dash number
W
R
E
C
B
Thread
Tubing
Brass
Corrosion
±.015
±.015
+.047
+.047
+.047
T
outside
resistant
Rad
-.000
-.000
-.000
AND10089
diameter
steel
2
C2
.125
.3125-32 UNEF-3A
.625
.625
.625
.312
.062
3
C3
.188
.3750-24 UNF-3A
.688
.688
.688
.375
4
C4
.250
.4375-20 UNF-3A
.750
.750
.750
.435
.094
5
C5
.312
.5000-20 UNF-3A
.875
.875
.875
6
C6
.375
.6250-18 UNF-3A
1.000
1.000
1.000
.625
8
C8
.500
.7500-16 UNF-3A
1.188
1.188
1.188
.125
.750
10
C10
.625
.9375-14 NS-3
1.250
1.250
1.250
.938
TABLE I. Dash numbers and size Continued. 1/ 2/
Dash number
W
R
E
C
B
Thread
Tubing
Brass
Corrosion
±.381
±..381
+1.194
+1.194
+1.194
T
outside
resistant
Rad
-.000
-.000
-.000
AND10089
diameter
steel
2
C2
3.175
.3125-32 UNEF-3A
15.875
15.875
15.875
7.925
1.575
3
C3
4.267
.3750-24 UNF-3A
17.475
17.475
17.475
9.525
4
C4
6.350
.4375-20 UNF-3A
19.050
19.050
19.050
11.125
2.388
5
C5
7.925
.5000-20 UNF-3A
22.225
22.225
22.225
6
C6
9.525
.6250-18 UNF-3A
25.4
25.4
25.4
15.875
8
C8
12.700
.7500-16 UNF-3A
30.175
30.175
30.175
19.05
3.175
10
C10
15.875
.9375-14 NS-3
31.75
31.75
31.75
23.825
1/ Dimensions are in inches
2/ Metric equivalents are given for information only.