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Technical Data Sheet
PartsTable / MRO / 20503-9
20503-9 ✓ Verified by PartsTable
Hama · 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

The CAPACITOR,FIXED,ELECTROLYTIC is a Hama cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include diameter: 0.056 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN, material: STEEL OVERALL, end_style: 90 DEGREE PARALLEL, point_type: EXTENDED PRONG SQUARE CUT, ring_style: STRAIGHT GAP, usage_design: INTERNAL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4030-00-360-0304, 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→ 20503-9
NSN: 4030-00-360-0304
FSC: 4030
CAGE: 0839B — CIMSA INGENIERIA DE SISTEMAS SA (ESP)
SPECIFICATIONS
diameter0.056 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
materialSTEEL OVERALL
end_style90 DEGREE PARALLEL
point_typeEXTENDED PRONG SQUARE CUT
ring_styleSTRAIGHT GAP
usage_designINTERNAL
end_conditionTHREADED
inside_length2.125 INCHES MINIMUM AND 2.375 INCHES MAXIMUM IN
opening_width0.688 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
inside_diameter2.524 INCHES NOMINAL IN
major_thickness0.250 INCHES NOMINAL IN
outside_diameter2.594 INCHES NOMINAL IN
NSN4030-00-360-0304
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Hama CAPACITOR,FIXED,ELECTROLYTIC TITLE COMPONENT PN 20503-9 MFR Hama CAPACITOR,FIXED,ELECTR
KEY FEATURES
•
SURFACE TREATMENT: PHOSPHATE
•
STYLE DESIGNATOR: ANCHOR
•
END CONDITION: THREADED
•
MATERIAL: STEEL COMP 4130 OR STEEL COMP 4140
•
CLOSURE HEAD STYLE: HEXAGON
•
INSIDE LENGTH: 2.125 INCHES MINIMUM AND 2.375 INCHES MAXIMUM IN
•
MATERIAL DIAMETER: 0.625 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)
SURFACE TREATMENTPHOSPHATE
STYLE DESIGNATORANCHOR
SPECIAL FEATURESPROOF LOAD 20000 LBS,SCREW CAP MS90727-166,NUT MS35691-53,USED AS CLEVIS,SUSPENSION AIR DELIVERY TY 1 LBS
END CONDITIONTHREADED
MATERIALSTEEL COMP 4130 OR STEEL COMP 4140
CLOSURE HEAD STYLEHEXAGON
INSIDE LENGTH2.125 INCHES MINIMUM AND 2.375 INCHES MAXIMUM IN
MATERIAL DIAMETER0.625 INCHES NOMINAL IN
OPENING WIDTH0.688 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
MS22042-1Interchangeable
interchangeable cross-reference
interchangeable
PIA-H-7195Interchangeable
interchangeable cross-reference
interchangeable
IAC-A12428/1Interchangeable
interchangeable cross-reference
interchangeable
MS22046-1Interchangeable
interchangeable cross-reference
interchangeable
PIA PS22046Interchangeable
interchangeable cross-reference
interchangeable
PS22047-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20503-9?
20503-9 is a CAPACITOR,FIXED,ELECTROLYTIC manufactured by Hama. It is classified as a MRO (MRO_GENERAL).
What parts can replace 20503-9?
There are 21 known substitutes for 20503-9: MS22042-1, PIA-H-7195, IAC-A12428/1 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20503-9?
20503-9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4030-00-360-0304. 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