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AS1655 — COUPLING ASSEMBLY,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AS1655: COUPLING ASSEMBLY,TUBE.

The COUPLING ASSEMBLY,TUBE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, overall_length: 1.091 INCHES MAXIMUM IN, outside_diameter: 3.080 INCHES MAXIMUM IN, style_designator: FLEXIBLE COUPLING BODY, surface_treatment: ANODIZE, end_item_identification: AIR COND, AIR CYCLE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-626-3823, 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
AS1655
NSN: 4730-01-626-3823
NIINs: 016263823, 016574355, 016574358, 016575651, 016575725, 017334648
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_length1.091 INCHES MAXIMUM IN
outside_diameter3.080 INCHES MAXIMUM IN
style_designatorFLEXIBLE COUPLING BODY
surface_treatmentANODIZE
end_item_identificationAIR COND, AIR CYCLE
material_document_and_classificationQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE
part_name_assigned_by_controlling_agencyCOUPLING BODY, THREADLESS-FLEXIBLE, FIXED CAVITY, SELF-BONDING
tube_outside_diameter_for_which_designed2.500 INCHES NOMINAL IN
surface_treatment_document_and_classificationAMS 2472, CLASS 2 NATIONAL STD SINGLE TREATMENT RESPONSE
NSN4730-01-626-3823
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS1655 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.736 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLEXIBLE COUPLING BODY
•
OUTSIDE DIAMETER: 2.850 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY 2024
TECHNICAL CHARACTERISTICS
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.736 INCHES NOMINAL IN
STYLE DESIGNATORFLEXIBLE COUPLING BODY
OVERALL LENGTH1.051 INCHES NOMINAL IN
OUTSIDE DIAMETER2.850 INCHES MAXIMUM IN
PART NAME ASSIGNED BY CONTROLLING AGENCYCOUPLING BODY, THREADLESS-FLEXIBLE, FIXED CAVITY, SELF BD
MATERIALALUMINUM ALLOY 2024
SUBSTITUTES & CROSS-REFERENCES 2
AS1655A28Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
SAE-AS1655Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS1655?
AS1655 is a COUPLING ASSEMBLY,TUBE.
What parts can replace AS1655?
There are 2 known substitutes for AS1655: AS1655A28, SAE-AS1655. Substitute compatibility should be verified for your specific system.
What is the NSN for AS1655?
AS1655 is cataloged in the U.S. Government catalog under NSN 4730-01-626-3823. 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.