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MS21902W16 — INJECTOR ASSEMBLY,FUEL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS21902W16: INJECTOR ASSEMBLY,FUEL.

The INJECTOR ASSEMBLY,FUEL is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 7075 OVERALL, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS ALL ENDS, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS, style_designator: FLARELESS W/ CENTER WRENCHING FACILITY, nominal_thread_size: 1.3125 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-045-5353, 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
MS21902W16
NSN: 4730-01-045-5353
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 7075 OVERALL
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
style_designatorFLARELESS W/ CENTER WRENCHING FACILITY
nominal_thread_size1.3125 INCHES ALL ENDS IN
nominal_overall_length1.750 INCHES IN
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) ALL ENDS
NSN4730-01-045-5353
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS21902W16 · 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
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.750 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS ALL ENDS
•
STYLE DESIGNATOR: FLARELESS W/ CENTER WRENCHING FACILITY
•
NOMINAL THREAD SIZE: 1.3125 INCHES ALL ENDS IN
•
THREAD CLASS: 3A ALL ENDS A
•
THREAD QUANTITY PER INCH: 12 ALL ENDS
•
MATERIAL: ALUMINUM ALLOY 7075 OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
NOMINAL OVERALL LENGTH1.750 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS ALL ENDS
STYLE DESIGNATORFLARELESS W/ CENTER WRENCHING FACILITY
NOMINAL THREAD SIZE1.3125 INCHES ALL ENDS IN
THREAD CLASS3A ALL ENDS A
THREAD QUANTITY PER INCH12 ALL ENDS
MATERIALALUMINUM ALLOY 7075 OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT (UNJ) ALL ENDS
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 4
AS18280Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS21902Reference document
Same NSN cross-reference
Reference document — Secondary reference
SAE-AS18280Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
4730PL0973945Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21902W16?
MS21902W16 is a INJECTOR ASSEMBLY,FUEL.
What parts can replace MS21902W16?
There are 4 known substitutes for MS21902W16: AS18280, AS21902, SAE-AS18280 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21902W16?
MS21902W16 is cataloged in the U.S. Government catalog under NSN 4730-01-045-5353. 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.