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4400B0390 — PLUNGER

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

4400B0390: PLUNGER.

The PLUNGER is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: ALUMINUM ALLOY,1.547 IN. LG,0.500 IN.

OD IN. This part is cataloged in the U.S. Government catalog under NSN 5840-00-437-7562, 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
MRO→ MRO_GENERAL→ 4400B0390
NSN: 5840-00-437-7562
NIINs: 004377562, 004952101
FSC: 5840 — Radar Equipment, Except Airborne
CAGE: 21877 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
general_characteristics_item_descriptionALUMINUM ALLOY,1.547 IN. LG,0.500 IN. OD IN
NSN5840-00-437-7562
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PLUNGER TITLE COMPONENT PN 4400B0390 MFR PLUNGER
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: ALUMINUM ALLOY,1.547 IN. LG,0.500 IN. OD IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONALUMINUM ALLOY,1.547 IN. LG,0.500 IN. OD IN
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)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4400B0390?
4400B0390 is a PLUNGER. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 4400B0390?
4400B0390 is cataloged in the U.S. Government catalog under NSN 5840-00-437-7562. 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.