PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 553-637-4-50
553-637-4-50 ✓ Verified by PartsTable
— · PIPE SECTION
WHAT YOU NEED TO KNOW
Schedule = wall thickness, NOT diameter Nominal pipe size != actual OD
Sch 40 and Sch 80 same OD, different wall
PRODUCT OVERVIEW

The HOSE ASSEMBLY,NONMETALLIC is a the manufacturer industrial component. Key specifications include temp_rating: -25.0 FAHRENHEIT AND 100.0 FAHRENHEIT SINGLE RESPONSE DEGF, connection_type: INTERNAL QUICK DISCONNECT FIRST END, inside_diameter: 4.000 INCHES NOMINAL IN, connection_style: CAM OR LEVER (EXTERNAL) SECOND END, outside_diameter: 4.750 INCHES NOMINAL IN, features_provided: ELECTROSTATIC DISCHARGE CAPABILITY. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-083-0046, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
553-637-4-50
NSN: 4720-00-083-0046
FSC: 4720
CAGE: 04NP0 — CONTITECH USA, INC DBA VEYANCE TECHNOLOGIES (USA)
SPECIFICATIONS
temp_rating-25.0 FAHRENHEIT AND 100.0 FAHRENHEIT SINGLE RESPONSE DEGF
connection_typeINTERNAL QUICK DISCONNECT FIRST END
inside_diameter4.000 INCHES NOMINAL IN
connection_styleCAM OR LEVER (EXTERNAL) SECOND END
outside_diameter4.750 INCHES NOMINAL IN
special_featuresEND FITTINGS TO BE FURNISHED COMPLETELY ASSEMBLED WITH AA59326IX19 DUST CAP, AA59326X19 DUST PLUG, TWO /2/ A-A-59326 GASKETS, AND FOUR /4/ HOSE CLAMPS
features_providedELECTROSTATIC DISCHARGE CAPABILITY
operating_pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
burst_test_pressure600.0 POUNDS PER SQUARE INCH LBS
end_item_identificationFUEL SYSTEM SUPPLY POINT
inside_surface_conditionSMOOTH
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
NSN4720-00-083-0046
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 553-637-4-50 · OEM ⚠ VERIFY BEFORE ORDERING Schedule = wall thickness, NOT pipe diameter. Sch 40 and Sch 80 have the same OD but different wall thickness. Nominal pipe size ≠ actual OD — a 1" pipe is actually 1.315" OD ✓ BROKER TIP Sch 40 = standard wall, Sch 80 = heavy wall (higher pressure), Sch 160 = extra heavy. Seamless pipe is required for high-pressure applications — welded pipe has lower ratings PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NONDEFINITIVE SPEC/STD DATA: 3 TYPE AND 1 CLASS
•
QUICK DISCONNECT NOMINAL SIZE: 4.000 INCHES FIRST END IN
•
LAYER COMPOSITION AND LOCATION: 2ND LAYER BRAIDED COTTON CORD AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE AND 1ST LAYER BRAIDED COTTON CORD
•
OUTSIDE DIAMETER: 4.750 INCHES NOMINAL IN
•
TEMP RATING: -25.0 FAHRENHEIT AND 100.0 FAHRENHEIT SINGLE RESPONSE DEGF
•
CONNECTION STYLE: CAM OR LEVER (EXTERNAL) SECOND END
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESEND FITTINGS TO BE FURNISHED COMPLETELY ASSEMBLED WITH AA59326IX19 DUST CAP, AA59326X19 DUST PLUG, TWO /2/ A-A-59326 GASKETS, AND FOUR /4/ HOSE CLAMPS
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 1 CLASS
QUICK DISCONNECT NOMINAL SIZE4.000 INCHES FIRST END IN
QUICK DISCONNECT NOMINAL SIZE4.000 INCHES SECOND END IN
LAYER COMPOSITION AND LOCATION2ND LAYER BRAIDED COTTON CORD AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE AND 1ST LAYER BRAIDED COTTON CORD
OUTSIDE DIAMETER4.750 INCHES NOMINAL IN
TEMP RATING-25.0 FAHRENHEIT AND 100.0 FAHRENHEIT SINGLE RESPONSE DEGF
CONNECTION STYLECAM OR LEVER (EXTERNAL) SECOND END
BURST TEST PRESSURE600.0 POUNDS PER SQUARE INCH LBS
OPERATING PRESSURE150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
M11588-03-07Interchangeable
interchangeable cross-reference
interchangeable
M11588-03CST250Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-11588Interchangeable
interchangeable cross-reference
interchangeable
MIL-H-11588Interchangeable
interchangeable cross-reference
interchangeable
M11588-031-11-32-0300Interchangeable
interchangeable cross-reference
interchangeable
M11588-03GST0250Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 553-637-4-50?
553-637-4-50 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 553-637-4-50?
There are 26 known substitutes for 553-637-4-50: M11588-03-07, M11588-03CST250, MIL-PRF-11588 and 23 more. Substitute compatibility should be verified for your specific system.
Is 553-637-4-50 still available?
553-637-4-50 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026