INCH-POUND
MIL-DTL-26521L
11 February 2014
SUPERSEDING
MIL-DTL-26521K
15 February 1999
DETAIL SPECIFICATION
HOSE ASSEMBLY, NONMETALLIC, FUEL, COLLAPSIBLE, LOW TEMPERATURE
WITH NON-REUSABLE COUPLINGS
This specification is approved for use by all Departments and
Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This specification covers collapsible synthetic rubber hose assemblies for ground fueling
of aircraft with hydrocarbon fuels or non-potable water where working pressures do not exceed 225 psi.
1.2 Part or Identifying Number (PIN). The hose assembly PIN consists of the M prefix, specification
number, hose assembly size code, and length in inches as follows:
M 26521
-2
-600
Length of hose (inches)
Hose assembly dash size (see table I)
Specification number
M prefix
PIN example: M26521-2-600 is for a hose assembly 2.50 inch ID, 600 inches long.
TABLE I. Hose assembly ID size.
Hose
Hose ID
assembly
±.06 (1.52)
dash size
inch (mm)
-1
2.00 (50.8)
-2
2.50 (63.5)
-3
3.00 (76.2)
-4
4.00 (101.6)
Comments, suggestions, or questions on this document should be addressed to: DLA Land and Maritime,
Attn: VAI, P.O. Box 3990, Columbus, OH 43218-3990, or emailed to FluidFlow@dla.mil. Since contact
information can change, you may want to verify the currency of this address information using the ASSIST
Online database at https://assist.dla.mil.
AMSC N/A
FSC 4720
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