MIL-DTL-52618/3E
TABLE I. Size code designators for 90º reducing elbows.
Nominal pipe size
Nominal pipe size
(inch) X (inch)
(inch) X (inch)
Size code
Size code
numbers
numbers
Port
Port
Port
Port
1
2
1
2
103
1/2 X 3/8
121
2-1/2 X 1-1/4
104
3/4 X 1/2
122
2-1/2 X 1
105
1 X 3/4
123
3 X 2-1/2
106
1 X 1/2
124
3X2
107
1-1/4 X 1
125
3 X 1-1/2
108
1-1/4 X 3/4
126
3 X 1-1/4
109
1-1/4 X 1/2
127
3-1/2 X 3
110
1-1/2 X 1-1/4
128
4 X 3-1/2
111
1-1/2 X 1
129
4X3
112
1-1/2 X 3/4
130
4 X 2-1/2
113
1-1/2 X 1/2
131
4X2
114
2 X 1-1/2
132
5X4
115
2 X 1-1/4
133
5
X
3
116
2X1
134
5
X
2-1/2
117
2 X 3/4
135
6
X
5
118
2 X 1/2
136
6
X
4
119
2-1/2 X 2
137
6
X
3
120
2-1/2 X 1-1/2
138
8
X
6
Pipe threads shall be in accordance with MIL-DTL-52618.
Pipe thread direction code shall be in accordance with table II.
TABLE II. 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 III.
TABLE III. Finish code letter.
Finish code
Finish
letter
A
As cast
B
As extruded
C
Anodized
2