PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 531-6985695-F281
531-6985695-F281 ✓ 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: -40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF, inside_diameter: 1.810 INCHES NOMINAL IN, outside_diameter: 2.220 INCHES NOMINAL IN, burst_test_pressure: 1400.0 POUNDS PER SQUARE INCH LBS, end_item_identification: R.O. UNIT PORT (PIPING 4000 GPD SEAWATER-BRINE-PERM PORT); WSD: LOS ANGELES CLASS SSN (688), inside_surface_condition: SMOOTH.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-501-7173, 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
531-6985695-F281
NSN: 4720-01-501-7173
FSC: 4720
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
temp_rating-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
inside_diameter1.810 INCHES NOMINAL IN
outside_diameter2.220 INCHES NOMINAL IN
burst_test_pressure1400.0 POUNDS PER SQUARE INCH LBS
end_item_identificationR.O. UNIT PORT (PIPING 4000 GPD SEAWATER-BRINE-PERM PORT); WSD: LOS ANGELES CLASS SSN (688)
inside_surface_conditionSMOOTH
cross-sectional_shape_styleROUND
measuring_method_and_length15.555 INCHES NOMINAL EXCLUDING END FITTINGS IN
nondefinitive_spec/std_data32 SIZE
specification/standard_data81349/MIL-H-24136/3 GOVERNMENT SPECIFICATION
minimum_inside_bending_radius13.250 INCHES IN
NSN4720-01-501-7173
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 531-6985695-F281 · 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
•
SPECIFICATION/STANDARD DATA: 81349/MIL-H-24136/3 GOVERNMENT SPECIFICATION
•
INSIDE SURFACE CONDITION: SMOOTH
•
MINIMUM INSIDE BENDING RADIUS: 13.250 INCHES IN
•
MEASURING METHOD AND LENGTH: 15.555 INCHES NOMINAL EXCLUDING END FITTINGS IN
•
NONDEFINITIVE SPEC/STD DATA: 32 SIZE
•
OUTSIDE DIAMETER: 2.220 INCHES NOMINAL IN
•
BURST TEST PRESSURE: 1400.0 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESASSEMBLY CONSIST OF PN: F281-1 HOSE, PN: F281-2 FITTING STR END, - 32 HOSE X 3.062-12UN, 81349/MIL-H-24136/3 TY-1 81349/MIL-H-24136 96169/EB-3461; PN F281-3 ELBOW 90, -32 HOSE X 3.062-12, 32142/90EF-H1488CL 2432
SPECIFICATION/STANDARD DATA81349/MIL-H-24136/3 GOVERNMENT SPECIFICATION
INSIDE SURFACE CONDITIONSMOOTH
MINIMUM INSIDE BENDING RADIUS13.250 INCHES IN
MEASURING METHOD AND LENGTH15.555 INCHES NOMINAL EXCLUDING END FITTINGS IN
NONDEFINITIVE SPEC/STD DATA32 SIZE
OUTSIDE DIAMETER2.220 INCHES NOMINAL IN
BURST TEST PRESSURE1400.0 POUNDS PER SQUARE INCH LBS
TEMP RATING-40.0 FAHRENHEIT AND 200.0 FAHRENHEIT SINGLE RESPONSE DEGF
END ITEM IDENTIFICATIONR.O. UNIT PORT (PIPING 4000 GPD SEAWATER-BRINE-PERM PORT); WSD: LOS ANGELES CLASS SSN (688)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
2580-32Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-24136/3Interchangeable
interchangeable cross-reference
interchangeable
M24136/3-32Interchangeable
interchangeable cross-reference
interchangeable
H655-1503-F297-1Interchangeable
interchangeable cross-reference
interchangeable
531-6985695Interchangeable
interchangeable cross-reference
interchangeable
531-6985695-F297-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 531-6985695-F281?
531-6985695-F281 is a HOSE ASSEMBLY,NONMETALLIC.
What parts can replace 531-6985695-F281?
There are 14 known substitutes for 531-6985695-F281: 2580-32, MIL-DTL-24136/3, M24136/3-32 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 531-6985695-F281?
531-6985695-F281 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-01-501-7173. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026