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Technical Data Sheet
PartsTable / MRO / 80256-1
80256-1 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW

The 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 width: 0.938 INCHES NOMINAL IN, material: TIN BOARD, ear_width: 0.250 INCHES NOMINAL IN, body_style: BLOCK TYPE, body_width: 0.375 INCHES NOMINAL IN, inside_height: 0.312 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-703-2631, 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→ 80256-1
NSN: 5340-00-703-2631
FSC: 5340
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
width0.938 INCHES NOMINAL IN
materialTIN BOARD
ear_width0.250 INCHES NOMINAL IN
body_styleBLOCK TYPE
body_width0.375 INCHES NOMINAL IN
inside_height0.312 INCHES NOMINAL IN
board_thickness1.500 INCHES IN
special_featuresSCREW CONNECTION FLEXIBLE, CONDUCTOR CROSS SECTION
style_designatorSOCKET
board_constructionSOLID CONSTRUCTION
board_overall_width1.970 INCHES IN
board_overall_length2.220 INCHES IN
NSN5340-00-703-2631
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 80256-1 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 SHAPE STYLE: ANGLE
•
ANGLE BETWEEN EARS IN DEG: 90.0
•
DISTANCE BETWEEN MOUNTING HOLE CENTERS: 2.062 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 1010
•
STYLE DESIGNATOR: SOCKET
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633, COMP FS1010-CANCELED FED SPEC SINGLE MATERIAL RESPONSE
•
FSC APPLICATION DATA: DIFFERENTIAL,DRIVING AXLE
•
WIDTH: 0.938 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 (FLIS)
CROSS-SECTIONAL SHAPE STYLEANGLE
ANGLE BETWEEN EARS IN DEG90.0
DISTANCE BETWEEN MOUNTING HOLE CENTERS2.062 INCHES NOMINAL IN
MATERIALSTEEL COMP 1010
STYLE DESIGNATORSOCKET
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633, COMP FS1010-CANCELED FED SPEC SINGLE MATERIAL RESPONSE
FSC APPLICATION DATADIFFERENTIAL,DRIVING AXLE
WIDTH0.938 INCHES NOMINAL IN
PREBENT LOCKING FEATURE LOCATIONALL
INSIDE HEIGHT0.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
80256-1Interchangeable
interchangeable cross-reference
interchangeable
80256Interchangeable
interchangeable cross-reference
interchangeable
4974367Interchangeable
interchangeable cross-reference
interchangeable
40069394Interchangeable
interchangeable cross-reference
interchangeable
8025610000Interchangeable
interchangeable cross-reference
interchangeable
403572Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 80256-1?
80256-1 is a CAPACITOR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 80256-1?
There are 7 known substitutes for 80256-1: 80256-1, 80256, 4974367 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 80256-1?
80256-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-703-2631. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026