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1543371 — RETAINER,CAPACITOR

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

1543371: RETAINER,CAPACITOR.

The RETAINER,CAPACITOR is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: STEEL, overall_width: 2.070 INCHES NOMINAL IN, overall_height: 1.120 INCHES NOMINAL IN, overall_length: 3.750 INCHES NOMINAL IN, inside_diameter: 2.000 INCHES NOMINAL IN, outside_diameter: 3.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-776-8213, 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→ 1543371
NSN: 5330-00-776-8213
NIINs: 007768213, 010783556
FSC: 5330 — Packing and Gasket Materials
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialSTEEL
overall_width2.070 INCHES NOMINAL IN
overall_height1.120 INCHES NOMINAL IN
overall_length3.750 INCHES NOMINAL IN
inside_diameter2.000 INCHES NOMINAL IN
outside_diameter3.500 INCHES NOMINAL IN
style_designatorSREW CLAMP, FOOTED HOLE MOUNTING
aperture_diameter2.875 INCHES NOMINAL IN
surface_treatmentCADMIUM
mounting_slot_widthUNABLE TO DECODE
bolt_circle_diameterUNABLE TO DECODE
mounting_slot_lengthUNABLE TO DECODE
NSN5330-00-776-8213
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1543371 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
•
CROSS-SECTIONAL THICKNESS: 0.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-12803,+2256A MIL SPEC ALL MATERIAL RESPONSES OVERALL A
•
CROSS-SECTIONAL SHAPE STYLE: SOLID SINGLE OR COMPOSITION
•
OUTSIDE DIAMETER: 3.500 INCHES NOMINAL IN
•
APERTURE DIAMETER: 2.875 INCHES NOMINAL IN
•
MATERIAL: RUBBER CHLOROPRENE CLASS CR AND CORK OVERALL
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
CROSS-SECTIONAL THICKNESS0.125 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-12803,+2256A MIL SPEC ALL MATERIAL RESPONSES OVERALL A
CROSS-SECTIONAL SHAPE STYLESOLID SINGLE OR COMPOSITION
OUTSIDE DIAMETER3.500 INCHES NOMINAL IN
APERTURE DIAMETER2.875 INCHES NOMINAL IN
MATERIALRUBBER CHLOROPRENE CLASS CR AND CORK OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
7768213Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1543371?
1543371 is a RETAINER,CAPACITOR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1543371?
There is 1 known substitute for 1543371: 7768213. Substitute compatibility should be verified for your specific system.
What is the NSN for 1543371?
1543371 is cataloged in the U.S. Government catalog under NSN 5330-00-776-8213. 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.