A-A-59567/3
TABLE I. Size codes for hose assemblies.
Class B
PIN size
Hose
Class AA
Water hose
code
assembly size
water hose 1/
2/
-12
.500
1.500
1.500
-16
.625
2.000
2.000
-20
.750
2.500
2.500
-24
1.00
3.000
3.000
-28
1.25
3.500
3.500
-32
1.50
4.000
4.000
-34 3/
2.00
4.500
4.500
-40
2.50
5.000
5.000
-48
3.00
6.000
6.000
1/ See table II for class A style designators.
2/ See table III for class AA style designators.
3/ 4.50 X 4.00 inch coupling. The 4.50 X 4.00 inch coupling shall
have a 4.50 inch NH thread and shall accommodate the 4.00
inch ID hose.
Tightening provisions. Rocker lugs, shall be located on the swivel nut only when specified rocker lugs
shall be located on both male and female sections.
Gasket. Hose assemblies shall come with a gasket, see figure 3. Gasket material shall be suitable for
potable water or non-potable water as applicable.
Coupling hose threads. Coupling hose threads shall be either National Hose (NH) or National Pipe
Straight Hose (NPSH) in accordance with FED-STD-H28/10. NH and NPSH threads are not
interchangeable.
NOTE: Hose assemblies for this CID are not intended to meet the pressure requirements of the
couplings.
TABLE II. PIN codes for class A type, style thread, and clamp designator.
Class A
Thread
coupling
Style
type
PIN code
7J
Expansion ring
NH
7K
Expansion ring
NPSH
Expansion ring
7L
NH
handles on both
Expansion ring
7M
NPSH
handles on both
3
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