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MS21908V4P — INJECTOR ASSEMBLY,FUEL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS21908V4P: INJECTOR ASSEMBLY,FUEL.

The INJECTOR ASSEMBLY,FUEL is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.500 INCHES MINIMUM AND 1.547 INCHES MAXIMUM FIRST END IN, seat_angle: 12.0 DEGREES ALL ENDS, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-542-6345, 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
MS21908V4P
NSN: 4730-01-542-6345
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 0U583 — SAE INTERNATIONAL DBA SAE INTERNATIONAL (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
flow_angle90.0 DEGREES
leg_length1.500 INCHES MINIMUM AND 1.547 INCHES MAXIMUM FIRST END IN
seat_angle12.0 DEGREES ALL ENDS
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARELESS (TUBE) ALL ENDS
special_featuresMATERIAL CORROSION RESISTANT STEEL (15-5PH) CADMIUM PLATED; FIRST END HAS BULKHEAD THREADS
nominal_thread_size0.438 INCHES ALL ENDS IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
specification/standard_data81343 - AS21908 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
part_name_assigned_by_controlling_agencyELBOW, BULKHEAD UNIVERSAL 90, FLARELESS TUBE
NSN4730-01-542-6345
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS21908V4P · 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
•
FLOW ANGLE: 90.0 DEGREES
•
CONNECTION STYLE: FLARELESS (TUBE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL TUBE ALL ENDS
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES ALL ENDS IN
•
LEG LENGTH: 0.938 INCHES MINIMUM AND 0.985 INCHES MAXIMUM SECOND END IN
•
NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN
•
SEAT ANGLE: 12.0 DEGREES ALL ENDS
TECHNICAL CHARACTERISTICS
FLOW ANGLE90.0 DEGREES
CONNECTION STYLEFLARELESS (TUBE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES ALL ENDS IN
LEG LENGTH0.938 INCHES MINIMUM AND 0.985 INCHES MAXIMUM SECOND END IN
LEG LENGTH1.500 INCHES MINIMUM AND 1.547 INCHES MAXIMUM FIRST END IN
NOMINAL THREAD SIZE0.438 INCHES ALL ENDS IN
SEAT ANGLE12.0 DEGREES ALL ENDS
SPECIFICATION/STANDARD DATA81343 - AS21908 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
SPECIAL FEATURESMATERIAL CORROSION RESISTANT STEEL (15-5PH) CADMIUM PLATED; FIRST END HAS BULKHEAD THREADS
SUBSTITUTES & CROSS-REFERENCES 4
SAE-AS18280Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
4780005416479Reference document
Same NSN cross-reference
Reference document — Informative reference only
AS18280Reference document
Same NSN cross-reference
Reference document — Secondary reference
AS21908Reference document
Same NSN cross-reference
Reference document — Secondary 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 MS21908V4P?
MS21908V4P is a INJECTOR ASSEMBLY,FUEL.
What parts can replace MS21908V4P?
There are 4 known substitutes for MS21908V4P: SAE-AS18280, 4780005416479, AS18280 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21908V4P?
MS21908V4P is cataloged in the U.S. Government catalog under NSN 4730-01-542-6345. 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.