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21-4565 — CAPACITOR,FIXED,CERAMIC DIELECTR

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

21-4565: CAPACITOR,FIXED,CERAMIC DIELECTR.

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, hinge_pin: NOT INCLUDED, overall_length: 11.820 INCHES NOMINAL IN, performance_type: NOT RATED, style_designator: BUTT BLANK, surface_treatment: ANODIZE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-215-9905, 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→ 21-4565
NSN: 5340-01-215-9905
NIINs: 012159905, 012438166
FSC: 5340 — Hardware, Commercial
CAGE: 06481 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
hinge_pinNOT INCLUDED
overall_length11.820 INCHES NOMINAL IN
knuckle_quantity2
performance_typeNOT RATED
style_designatorBUTT BLANK
surface_treatmentANODIZE OVERALL
end_knuckle_length0.990 INCHES NOMINAL IN
material_thickness0.375 INCHES NOMINAL IN
reversible_featureNOT INCLUDED
mounting_hole_quantity4
knuckle_inside_diameter0.2306 INCHES MINIMUM AND 0.2381 INCHES MAXIMUM IN
NSN5340-01-215-9905
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 21-4565 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MOUNTING HOLE QUANTITY: 4
•
REVERSIBLE FEATURE: NOT INCLUDED
•
KNUCKLE INSIDE DIAMETER: 0.2306 INCHES MINIMUM AND 0.2381 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: BUTT BLANK
•
PIN CENTER TO BODY EDGE DISTANCE: 1.750 INCHES NOMINAL IN
•
HINGE PIN: NOT INCLUDED
•
MATERIAL THICKNESS: 0.375 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS
MOUNTING HOLE QUANTITY4
REVERSIBLE FEATURENOT INCLUDED
KNUCKLE INSIDE DIAMETER0.2306 INCHES MINIMUM AND 0.2381 INCHES MAXIMUM IN
STYLE DESIGNATORBUTT BLANK
OVERALL LENGTH11.820 INCHES NOMINAL IN
PIN CENTER TO BODY EDGE DISTANCE1.750 INCHES NOMINAL IN
HINGE PINNOT INCLUDED
MATERIAL THICKNESS0.375 INCHES NOMINAL IN
KNUCKLE QUANTITY2
END KNUCKLE LENGTH0.990 INCHES NOMINAL 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 21-4565?
21-4565 is a CAPACITOR,FIXED,CERAMIC DIELECTR. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 21-4565?
21-4565 is cataloged in the U.S. Government catalog under NSN 5340-01-215-9905. 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.