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HC51 ✓ 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

The CAPACITOR,FIXED,ELECTROLYTIC 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 shape: STRAIGHT, length: 1.438 INCHES NOMINAL IN, diameter: 0.250 INCHES NOMINAL IN, material: TUNGSTEN CARBIDE, mounting_shank: INCLUDED, overall_diameter: 0.375 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 5955-00-168-9111, 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
HC51
NSN: 5955-00-168-9111
FSC: 5955
CAGE: U0522 — AEI CABLES (A DIVISION OF THE TT GROUP) (GBR)
SPECIFICATIONS
shapeSTRAIGHT
length1.438 INCHES NOMINAL IN
diameter0.250 INCHES NOMINAL IN
materialTUNGSTEN CARBIDE
mounting_shankINCLUDED
overall_diameter0.375 INCHES NOMINAL IN
special_features14 DEG INCLUDED ANGLE
style_designatorCONE SHAPE
removability_featureNOT INCLUDED
shank_overall_length2.438 INCHES NOMINAL IN
cutter_tooth_cut_styleMEDIUM
cutting_surface_length1.000 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN
NSN5955-00-168-9111
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN HC51 MFR CAPACITOR,FIXED,ELECTR
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
HC-51Interchangeable
interchangeable cross-reference
interchangeable
48375020Interchangeable
interchangeable cross-reference
interchangeable
H-803-MInterchangeable
interchangeable cross-reference
interchangeable
5935-99-9438137Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is HC51?
HC51 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace HC51?
There are 4 known substitutes for HC51: HC-51, 48375020, H-803-M and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for HC51?
HC51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5955-00-168-9111. 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