AS21909K4 — INJECTOR ASSEMBLY,FUEL

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

AS21909K4: INJECTOR ASSEMBLY,FUEL.

The INJECTOR ASSEMBLY,FUEL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, leg_length: 1.500 INCHES NOMINAL THIRD 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 4730-01-525-0397, 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

AS21909K4

NSN: 4730-01-525-0397
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)

SPECIFICATIONS

material	STEEL COMP 316 OVERALL
leg_length	1.500 INCHES NOMINAL THIRD 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
surface_treatment	PASSIVATE OVERALL
nominal_thread_size	0.438 INCHES ALL ENDS IN
thread_series_designator	UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
nominal_outside_diameter_tube_accommodated	0.250 INCHES ALL ENDS IN
NSN	4730-01-525-0397

COMPONENT DIAGRAM

KEY FEATURES

•

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: 1.500 INCHES NOMINAL THIRD END IN

•

NOMINAL THREAD SIZE: 0.438 INCHES ALL ENDS IN

•

SEAT ANGLE: 12.0 DEGREES ALL ENDS

TECHNICAL CHARACTERISTICS

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	1.500 INCHES NOMINAL THIRD END IN
LEG LENGTH	0.937 INCHES NOMINAL FIRST END IN
LEG LENGTH	0.937 INCHES NOMINAL SECOND END IN
NOMINAL THREAD SIZE	0.438 INCHES ALL ENDS IN
SEAT ANGLE	12.0 DEGREES ALL ENDS
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	3A ALL ENDS A

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

AS21909Reference document

Same NSN cross-reference

Reference document — Secondary reference

AS18280Reference document

Same NSN cross-reference

Reference document — Secondary reference

MS21909K4Reference document

Same NSN cross-reference

Reference document — Secondary reference

SAE-AS18280Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is AS21909K4?

AS21909K4 is a INJECTOR ASSEMBLY,FUEL.

What parts can replace AS21909K4?

There are 4 known substitutes for AS21909K4: AS21909, AS18280, MS21909K4 and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for AS21909K4?

AS21909K4 is cataloged in the U.S. Government catalog under NSN 4730-01-525-0397. This indicates validated use in U.S. government and defense supply chains.

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AS21909K4 — INJECTOR ASSEMBLY,FUEL

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