PartsTable
Technical Data Sheet
PartsTable / MRO / 91-4
91-4 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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,FIXED,CERAMIC DIELECTR. Key specifications include diameter: 0.401 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, design_type: CABINET, shank_style: STRAIGHT ROUND, cutting_width: 0.75 INCHES NOMINAL IN, overall_length: 6.25 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 6625-01-042-9842, 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→ 91-4
NSN: 6625-01-042-9842
FSC: 6625
CAGE: 89280 — Q V S INC (USA)
SPECIFICATIONS
diameter0.401 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
design_typeCABINET
shank_styleSTRAIGHT ROUND
cutting_width0.75 INCHES NOMINAL IN
overall_length6.25 INCHES NOMINAL IN
special_features0.3 LBS;BODY DIAMETER 0.5 INCH;V-CHISEL TIP LBS
style_designatorFLAT
retainer_diameter0.75 INCHES NOMINAL IN
shank_overall_length1.75 INCHES NOMINAL IN
end_item_identification4940-01-658-4535
part_name_assigned_by_controlling_agencyILLUMINATOR CABINET
NSN6625-01-042-9842
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,CERAMIC DIELECTR TITLE COMPONENT PN 91-4 MFR CAPACITOR,FIXED,CERAMI
KEY FEATURES
•
TEST ITEM CONNECTION METHOD: JACK
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)
TEST ITEM CONNECTION METHODJACK
END ITEM IDENTIFICATIONAN/PSM-37 MULTIMETER
TEST ITEM CONNECTION METHODJACK
END ITEM IDENTIFICATIONAN/PSM-37 MULTIMETER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 1
MX-9128/PSM-37Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91-4?
91-4 is a CAPACITOR,FIXED,CERAMIC DIELECTR. It is classified as a MRO (MRO_GENERAL).
What parts can replace 91-4?
There is 1 known substitute for 91-4: MX-9128/PSM-37. Substitute compatibility should be verified for your specific system.
What is the NSN for 91-4?
91-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-042-9842. 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