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AS1737D12 ✓ 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 FERRULE,SWAGE,TUBE COUPLING is a the manufacturer industrial component. Key specifications include end_item_identification: KC-46A AIRCRAFT A, part_name_assigned_by_controlling_agency: FERRULE, reference_number_differentiating_characteristics: ITEM IS FAA CERTIFIED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-333-2408, 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
AS1737D12
NSN: 4730-01-333-2408
FSC: 4730
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
end_item_identificationKC-46A AIRCRAFT A
part_name_assigned_by_controlling_agencyFERRULE
reference_number_differentiating_characteristicsITEM IS FAA CERTIFIED
NSN4730-01-333-2408
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS1737D12 · 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
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
•
MATERIAL: ALUMINUM ALLOY 2014
•
SPECIFICATION/STANDARD DATA: 81343-AS1737 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
•
NONDEFINITIVE SPEC/STD DATA: 12 SIZE
•
SLOT WIDTH: 0.035 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
•
SLEEVE OUTSIDE DIAMETER: 0.890 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
SPECIAL FEATURESCOLOR MAGENTA
MATERIALALUMINUM ALLOY 2014
SPECIFICATION/STANDARD DATA81343-AS1737 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NONDEFINITIVE SPEC/STD DATA12 SIZE
SLOT WIDTH0.035 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
SLEEVE OUTSIDE DIAMETER0.890 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
STYLE DESIGNATORSINGLE FLANGE
OVERALL LENGTH0.585 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
W83052-24Interchangeable
interchangeable cross-reference
interchangeable
AS1737D24Interchangeable
interchangeable cross-reference
interchangeable
AS1737Interchangeable
interchangeable cross-reference
interchangeable
AS1737D20Interchangeable
interchangeable cross-reference
interchangeable
SAE-AS1730Interchangeable
interchangeable cross-reference
interchangeable
AS1730Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS1737D12?
AS1737D12 is a FERRULE,SWAGE,TUBE COUPLING.
What parts can replace AS1737D12?
There are 11 known substitutes for AS1737D12: W83052-24, AS1737D24, AS1737 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AS1737D12?
AS1737D12 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-333-2408. 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