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21T190D6-8-8 — INJECTOR ASSEMBLY,FUEL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

21T190D6-8-8: INJECTOR ASSEMBLY,FUEL.

The INJECTOR ASSEMBLY,FUEL is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 OVERALL, leg_length: 1.336 INCHES NOMINAL SECOND END IN, seat_angle: 12.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARELESS (TUBE) ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-108-4903, 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
21T190D6-8-8
NSN: 4730-01-108-4903
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76823 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN IS DIV NORTHROP GRUMMAN AERONAUTICS SYSTEMS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2024 OVERALL
leg_length1.336 INCHES NOMINAL SECOND END IN
seat_angle12.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARELESS (TUBE) ALL ENDS
surface_treatmentANODIZE OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES THIRD END IN
maximum_operating_temp275.0 FAHRENHEIT SINGLE RESPONSE DEGF
media_for_which_designedHYDRAULIC FLUID SINGLE RESPONSE
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
NSN4730-01-108-4903
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21T190D6-8-8 · 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
•
FURNISHED ITEMS AND QUANTITY: 3 TUBE COUPLING NUT W/SLEEVE
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TYPE2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
CONNECTION STYLE: FLARELESS (TUBE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY3 TUBE COUPLING NUT W/SLEEVE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
CONNECTION STYLEFLARELESS (TUBE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-367,T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES THIRD END IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
LEG LENGTH1.820 INCHES NOMINAL FIRST END IN
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 2
AS1003Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS18280Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21T190D6-8-8?
21T190D6-8-8 is a INJECTOR ASSEMBLY,FUEL.
What parts can replace 21T190D6-8-8?
There are 2 known substitutes for 21T190D6-8-8: AS1003, AS18280. Substitute compatibility should be verified for your specific system.
What is the NSN for 21T190D6-8-8?
21T190D6-8-8 is cataloged in the U.S. Government catalog under NSN 4730-01-108-4903. 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.