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4055438 — PLATE,COMPONENT MOUNTING,AIRCRAF

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

4055438: PLATE,COMPONENT MOUNTING,AIRCRAF.

PLATE,COMPONENT MOUNTING,AIRCRAF. Key specifications include diameter: 4.380 INCHES MINIMUM AND 4.420 INCHES MAXIMUM IN, material: TITANIUM ALLOY OVERALL, end_item_identification: ACFT ENG F100, engine_section_location: AFTERBURNER, criticality_code_justification: MATT AND CZBJ AND ABMZ, material_document_and_classification: AMS4911 ASSN STD 1ST MATERIAL RESPONSE OR AMS4928 FED SPEC 2ND MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 2840-01-145-3788, 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
4055438
NSN: 2840-01-145-3788
FSC: 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
diameter4.380 INCHES MINIMUM AND 4.420 INCHES MAXIMUM IN
materialTITANIUM ALLOY OVERALL
end_item_identificationACFT ENG F100
engine_section_locationAFTERBURNER
criticality_code_justificationMATT AND CZBJ AND ABMZ
material_document_and_classificationAMS4911 ASSN STD 1ST MATERIAL RESPONSE OR AMS4928 FED SPEC 2ND MATERIAL RESPONSE OVERALL
NSN2840-01-145-3788
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PLATE,COMPONENT MOUNTING,AIRCRAF TITLE COMPONENT PN 4055438 MFR PLATE,COMPONENT MOUNTI
KEY FEATURES
•
CRITICALITY CODE JUSTIFICATION: MATT AND CZBJ AND ABMZ
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS4911 ASSN STD 1ST MATERIAL RESPONSE OR AMS4928 FED SPEC 2ND MATERIAL RESPONSE OVERALL
•
DIAMETER: 4.380 INCHES MINIMUM AND 4.420 INCHES MAXIMUM IN
•
ENGINE SECTION LOCATION: AFTERBURNER
•
MATERIAL: TITANIUM ALLOY OVERALL
TECHNICAL CHARACTERISTICS
CRITICALITY CODE JUSTIFICATIONMATT AND CZBJ AND ABMZ
MATERIAL DOCUMENT AND CLASSIFICATIONAMS4911 ASSN STD 1ST MATERIAL RESPONSE OR AMS4928 FED SPEC 2ND MATERIAL RESPONSE OVERALL
DIAMETER4.380 INCHES MINIMUM AND 4.420 INCHES MAXIMUM IN
ENGINE SECTION LOCATIONAFTERBURNER
END ITEM IDENTIFICATIONACFT ENG F100
MATERIALTITANIUM ALLOY OVERALL
OTHER ITEMS IN FSC 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2840-00-004-4242 2840-00-021-4702 2840-00-043-0981 2840-00-043-0982 2840-00-048-5261 2840-00-407-9165 2840-01-171-0875
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 4055438?
4055438 is a PLATE,COMPONENT MOUNTING,AIRCRAF.
What is the NSN for 4055438?
4055438 is cataloged in the U.S. Government catalog under NSN 2840-01-145-3788. 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.