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MS21905D8 — INJECTOR ASSEMBLY,FUEL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS21905D8: INJECTOR ASSEMBLY,FUEL.

The INJECTOR ASSEMBLY,FUEL is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2014 OVERALL, leg_length: 1.250 INCHES NOMINAL ALL ENDS1.250 INCHES NOMINAL ALL ENDS IN, seat_angle: 12.0 DEGREES SECOND END12.0 DEGREES FIRST END, thread_class: 3A ALL ENDS3A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS THIRD ENDTHREADED EXTERNAL BOSS THIRD END, connection_style: FLARELESS (TUBE) FIRST ENDFLARELESS (TUBE) FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-289-1162, 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
MS21905D8
NSN: 4730-00-289-1162
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY 2014 OVERALL
leg_length1.250 INCHES NOMINAL ALL ENDS1.250 INCHES NOMINAL ALL ENDS IN
seat_angle12.0 DEGREES SECOND END12.0 DEGREES FIRST END
thread_class3A ALL ENDS3A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS THIRD ENDTHREADED EXTERNAL BOSS THIRD END
connection_styleFLARELESS (TUBE) FIRST ENDFLARELESS (TUBE) FIRST END
surface_treatmentANODIZE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES ALL ENDS0.750 INCHES ALL ENDS IN
maximum_operating_temp275.0 FAHRENHEIT SINGLE RESPONSE275.0 FAHRENHEIT SINGLE RESPONSE DEGF
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
NSN4730-00-289-1162
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS21905D8 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARELESS (TUBE) SECOND ENDFLARELESS (TUBE) SECOND END
•
CONNECTION TYPE: THREADED EXTERNAL TUBE SECOND ENDTHREADED EXTERNAL TUBE SECOND END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEFLARELESS (TUBE) SECOND ENDFLARELESS (TUBE) SECOND END
CONNECTION STYLEFLARELESS (TUBE) FIRST ENDFLARELESS (TUBE) FIRST END
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD ENDEXTERNAL SEAT FOR GASKET SEAL (BOSS) THIRD END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND ENDTHREADED EXTERNAL TUBE SECOND END
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST ENDTHREADED EXTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS THIRD ENDTHREADED EXTERNAL BOSS THIRD END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES SECOND END0.500 INCHES FIRST END IN
SUBSTITUTES & CROSS-REFERENCES 7
MS2190508Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS21905W8Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS21905Reference document
Same NSN cross-reference
Reference document — Secondary reference
MILF18280Reference document
Same NSN cross-reference
Reference document — Secondary reference
4730PL0803292Reference document
Same NSN cross-reference
Reference document — Informative reference only
AS18280Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21905D8?
MS21905D8 is a INJECTOR ASSEMBLY,FUEL.
What parts can replace MS21905D8?
There are 7 known substitutes for MS21905D8: MS2190508, MS21905W8, AS21905 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21905D8?
MS21905D8 is cataloged in the U.S. Government catalog under NSN 4730-00-289-1162. 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.