MIL-DTL-24630/1B(SH)
TABLE III. Union nut dimensions. 1/
P
Q
R
O
(min length
(dia)
(dia)
Dash
S
U
NPS 2/
N
+0.015
T
of full
+0.003
+0.000
no.
(dia)
(ref)
-0.000
threads)
-0.000
-0.010
13/16-12UN-3B
/16
9
1
0.878
1.201
1
04N
¼
0.250
1.588
/16
11/16
13/8-12UNF-3B
9
1.003
1.388
1
06N
0.250
1.876
11/16
/16
9
1.378
1.763
1¾-12UN-3B
2
08N
½
0.250
2.309
/16
9
1
1.628
2.013
2-12UN-3B
2
12N
¾
0.313
2.742
/16
25/16-12UNS-3B 3/
11
1¼
1.940
2.326
2¾
16N
1
0.313
3.175
/16
11
1¼
2.378
2.763
2¾-12UN-3B
3¼
20N
1¼
0.313
3.752
31/16-12UNS-3B 4/
/16
13
1½
2.565
3.076
3¾
24N
1½
0.375
4.330
/16
13
1½
3.190
3.763
3¾-12UN-3B
4
32N
2
0.375
5.051
5
11/16
1
3.941
4.513
4½-12UN-3B
40N
2½
0.438
5.918
NOTES:
1/
Union nut dimensions captured within this table originate from 803-1385884.
2/
Check valve port dimensions are based on schedule 80 pipe. Use in other schedule piping may increase noise
characteristic slightly.
PD 2.26432.2584.
3/
PD 3.01463.0084.
4/
CHANGES FROM PREVIOUS ISSUE: Marginal notations are not used in this revision to identify changes
with respect to the previous issue due to the extent of the changes.
Custodian:
Preparing activity:
Navy SH
Navy SH
(Project 4820-2013-007)
Review activity:
DLA CC
NOTE: The activities listed above were interested in this document as of the date of this document. Since
organizations and responsibilities can change, you should verify the currency of the information above using the
ASSIST Online database at https://assist.dla.mil.
6