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Technical Data Sheet
PartsTable / COMPONENT / 520203-6
520203-6 ✓ 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 material: RUBBER SYNTHETIC TUBE, temp_rating: -65.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF, exterior_color: BLACK, inside_diameter: 0.219 INCHES NOMINAL IN, outside_diameter: 0.625 INCHES NOMINAL IN, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-683-8830, 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
520203-6
NSN: 4720-00-683-8830
FSC: 4720
CAGE: 80020 — NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION JOINT BASE JBMDL (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC TUBE
temp_rating-65.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
exterior_colorBLACK
inside_diameter0.219 INCHES NOMINAL IN
outside_diameter0.625 INCHES NOMINAL IN
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
burst_test_pressure16000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
end_item_identificationGRUMMAN A-10 AIRCRAFT
inside_surface_conditionSMOOTH
media_for_which_designedFUEL/OIL, HYDROCARBON SINGLE RESPONSE
hydrostatic_test_pressure8000.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
cross-sectional_shape_styleROUND
NSN4720-00-683-8830
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 520203-6 · 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
•
OUTSIDE DIAMETER: 0.625 INCHES NOMINAL IN
•
MINIMUM INSIDE BENDING RADIUS: 3.000 INCHES IN
•
LAYER COMPOSITION AND LOCATION: 1ST LAYER BRAIDED STEEL WIRE AND 2ND LAYER BRAIDED STEEL WIRE AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE
•
MEDIA FOR WHICH DESIGNED: FUEL/OIL, HYDROCARBON SINGLE RESPONSE
•
INSIDE SURFACE CONDITION: SMOOTH
•
OUTER COVERING ENVIRONMENTAL PROTECTION: ABRASION RESISTANT AND OIL RESISTANT
•
NONDEFINITIVE SPEC/STD DATA: 4 SIZE
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONGRUMMAN A-10 AIRCRAFT
OUTSIDE DIAMETER0.625 INCHES NOMINAL IN
MINIMUM INSIDE BENDING RADIUS3.000 INCHES IN
LAYER COMPOSITION AND LOCATION1ST LAYER BRAIDED STEEL WIRE AND 2ND LAYER BRAIDED STEEL WIRE AND OUTER LAYER MOLDED RUBBER, CHLOROPRENE
MEDIA FOR WHICH DESIGNEDFUEL/OIL, HYDROCARBON SINGLE RESPONSE
INSIDE SURFACE CONDITIONSMOOTH
OUTER COVERING ENVIRONMENTAL PROTECTIONABRASION RESISTANT AND OIL RESISTANT
NONDEFINITIVE SPEC/STD DATA4 SIZE
MATERIALRUBBER SYNTHETIC TUBE
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
MS28762-40160Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-8790Interchangeable
interchangeable cross-reference
interchangeable
M8788-5Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-8788Interchangeable
interchangeable cross-reference
interchangeable
MIL-H-8788Interchangeable
interchangeable cross-reference
interchangeable
309-6-0160Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 520203-6?
520203-6 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 520203-6?
There are 31 known substitutes for 520203-6: MS28762-40160, MIL-DTL-8790, M8788-5 and 28 more. Substitute compatibility should be verified for your specific system.
Is 520203-6 still available?
520203-6 is currently cancelled.
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Last verified: July 2026