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253571FRU — HOSE ASSEMBLY,METALLIC

✓ Government record, cited
— · PIPE SECTION
PRODUCT OVERVIEW

253571FRU: HOSE ASSEMBLY,METALLIC.

The HOSE ASSEMBLY,METALLIC is a the manufacturer industrial component. Key specifications include special_features: CLEAN FOR OXYGEN SERICE, end_item_identification: 3655-00-158-0657 LIQUID OXYGEN TRAILER, media_for_which_designed: OXYGEN, LIQUID SINGLE RESPONSE, inner_conveying_tube_style: ANNULAR OPEN-PITCH CORRUGATED, cross-sectional_shape_style: ROUND, measuring_method_and_length: 18.000 INCHES NOMINAL OVERALL IN. This part is cataloged in the U.S.

Government catalog under NSN 4720-01-056-9241, 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
253571FRU
NSN: 4720-01-056-9241
FSC: 4720 — Hose and Flexible Tubing
CAGE: Z5B11 — MILSPEC SERVICES PTY LIMITED (AUS)
SPECIFICATIONS
special_featuresCLEAN FOR OXYGEN SERICE
end_item_identification3655-00-158-0657 LIQUID OXYGEN TRAILER
media_for_which_designedOXYGEN, LIQUID SINGLE RESPONSE
inner_conveying_tube_styleANNULAR OPEN-PITCH CORRUGATED
cross-sectional_shape_styleROUND
measuring_method_and_length18.000 INCHES NOMINAL OVERALL IN
NSN4720-01-056-9241
COMPONENT DIAGRAM
PIPE SECTION — SCHEDULE = WALL THICKNESS WALL: — OD: — LENGTH: — — — PN: 253571FRU · 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
•
MEASURING METHOD AND LENGTH: 18.000 INCHES NOMINAL OVERALL IN
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
MEDIA FOR WHICH DESIGNED: OXYGEN, LIQUID SINGLE RESPONSE
•
INNER CONVEYING TUBE STYLE: ANNULAR OPEN-PITCH CORRUGATED
TECHNICAL CHARACTERISTICS
MEASURING METHOD AND LENGTH18.000 INCHES NOMINAL OVERALL IN
CROSS-SECTIONAL SHAPE STYLEROUND
SPECIAL FEATURESCLEAN FOR OXYGEN SERICE
MEDIA FOR WHICH DESIGNEDOXYGEN, LIQUID SINGLE RESPONSE
END ITEM IDENTIFICATION3655-00-158-0657 LIQUID OXYGEN TRAILER
INNER CONVEYING TUBE STYLEANNULAR OPEN-PITCH CORRUGATED
SUBSTITUTES & CROSS-REFERENCES 2
600NN18INReference document
Same NSN cross-reference
Reference document — Secondary reference
601-18X5-8Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 253571FRU?
253571FRU is a HOSE ASSEMBLY,METALLIC.
What parts can replace 253571FRU?
There are 2 known substitutes for 253571FRU: 600NN18IN, 601-18X5-8. Substitute compatibility should be verified for your specific system.
What is the NSN for 253571FRU?
253571FRU is cataloged in the U.S. Government catalog under NSN 4720-01-056-9241. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.