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L843 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: STEEL OVERALL, overall_length: 4.250 INCHES NOMINAL IN, drive_end_shape: SQUARE SINGLE END INTERNAL, special_features: STANDARD LENGTH, style_designator: INTERNAL-INTERNAL, features_provided: MANUAL TOOL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-499-8274, 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
L843
NSN: 2805-00-499-8274
FSC: 2805
CAGE: 76255 — MCQUAY-NORRIS INC OEM DIV AN SKF INDUSTRIES CO
SPECIFICATIONS
materialSTEEL OVERALL
overall_length4.250 INCHES NOMINAL IN
drive_end_shapeSQUARE SINGLE END INTERNAL
special_featuresSTANDARD LENGTH
style_designatorINTERNAL-INTERNAL
features_providedMANUAL TOOL
surface_treatmentCHROMIUM OVERALL
drive_surface_size1.000 INCHES NOMINAL SINGLE END IN
standard_bore_diameter4.625 INCHES IN
wrenching_surface_size2.625 INCHES NOMINAL SINGLE END IN
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
wrenching_surface_shape6 POINT SINGLE END INTERNAL
NSN2805-00-499-8274
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN L843 MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
PISTON ACCOMMODATION QUANTITY: 4
•
RING SET COMPONENT PARTS: COMPRESSION RING,77220,8,COMPRESSION RING,70CM,77220,4,OIL RING,77220,77220,4 CM
•
STANDARD BORE DIAMETER: 4.625 INCHES 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)
PISTON ACCOMMODATION QUANTITY4
RING SET COMPONENT PARTSCOMPRESSION RING,77220,8,COMPRESSION RING,70CM,77220,4,OIL RING,77220,77220,4 CM
STANDARD BORE DIAMETER4.625 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
121458Interchangeable
interchangeable cross-reference
interchangeable
WA39Interchangeable
interchangeable cross-reference
interchangeable
DS-934047Interchangeable
interchangeable cross-reference
interchangeable
4855Interchangeable
interchangeable cross-reference
interchangeable
HY20950Interchangeable
interchangeable cross-reference
interchangeable
6233Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L843?
L843 is a CAPACITOR,VARIABLE,AIR DIELECTRI.
What parts can replace L843?
There are 23 known substitutes for L843: 121458, WA39, DS-934047 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for L843?
L843 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-499-8274. 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