MIL-DTL-52618/2E
TABLE III. Size code numbers for close and open pattern return bends (see figures B and C).
Size code
Nominal pipe size
numbers
(inch)
04
1/2
05
3/4
06
1
07
1-1/4
08
1-1/2
09
2
10
2-1/2
11
3
12
3-1/2
13
4
14
5
15
6
16
8
17
10
18
12
Pipe threads shall be in accordance with MIL-DTL-52618.
Pipe thread direction code shall be in accordance with table IV.
TABLE IV. Thread direction code letter.
Thread direction
Thread direction
code letter
X
Right-hand
Y
Left-hand
Z
Right- and left-hand
Finish shall be in accordance with MIL-DTL-52618.
Finish code letter shall be in accordance with table V.
TABLE V. Finish code letter.
Finish code
Finish
Letter
A
As cast
B
As extruded
C
Anodized
3