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AS1654A40 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The SLEEVE,FLARED,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, overall_length: 0.780 INCHES MAXIMUM IN, surface_treatment: ANODIZE, end_item_identification: AIR CONDITIONER, AIR CYCLE, sleeve_outside_diameter: 2.887 INCHES MAXIMUM IN, nondefinitive_spec/std_data: AS1654 DRAWING NUMBER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-733-4553, 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
AS1654A40
NSN: 4730-01-733-4553
FSC: 4730
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_length0.780 INCHES MAXIMUM IN
surface_treatmentANODIZE
end_item_identificationAIR CONDITIONER, AIR CYCLE
sleeve_outside_diameter2.887 INCHES MAXIMUM IN
nondefinitive_spec/std_dataAS1654 DRAWING NUMBER
specification/standard_dataAS1654A40 INTERNATIONAL STD/SPEC
part_name_assigned_by_controlling_agencySLEEVE, THREADLESS-FLEXIBLE, FIXED CAVITY
hose/tube_outside_diameter_for_which_designed2.50 INCHES NOMINAL IN
NSN4730-01-733-4553
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS1654A40 · 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
•
SLEEVE OUTSIDE DIAMETER: 2.887 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: AS1654A40 INTERNATIONAL STD/SPEC
•
SURFACE TREATMENT: ANODIZE
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 2.50 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONAIR CONDITIONER, AIR CYCLE
PART NAME ASSIGNED BY CONTROLLING AGENCYSLEEVE, THREADLESS-FLEXIBLE, FIXED CAVITY
SLEEVE OUTSIDE DIAMETER2.887 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATAAS1654A40 INTERNATIONAL STD/SPEC
SURFACE TREATMENTANODIZE
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED2.50 INCHES NOMINAL IN
OVERALL LENGTH0.780 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY
NONDEFINITIVE SPEC/STD DATAAS1654 DRAWING NUMBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
EPIBOND 123/931Interchangeable
interchangeable cross-reference
interchangeable
8040PL0665992Interchangeable
interchangeable cross-reference
interchangeable
A-1216-BInterchangeable
interchangeable cross-reference
interchangeable
023875Interchangeable
interchangeable cross-reference
interchangeable
56VA040SInterchangeable
interchangeable cross-reference
interchangeable
1A109Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS1654A40?
AS1654A40 is a SLEEVE,FLARED,TUBE FITTING.
What parts can replace AS1654A40?
There are 26 known substitutes for AS1654A40: EPIBOND 123/931, 8040PL0665992, A-1216-B and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS1654A40?
AS1654A40 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-733-4553. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026