PartsTable
Technical Data Sheet
PartsTable / MRO / A4-45
A4-45 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
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 diameter: 0.438 INCHES NOMINAL IN, material: STEEL COMP 8620 OVERALL, drive_type: SLOTTED, grip_length: 0.450 INCHES NOMINAL IN, shank_neck_length: 0.080 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-433-0026, 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→ A4-45
NSN: 5325-00-433-0026
FSC: 5325
CAGE: 72794 — SOUTHCO INC (USA)
SPECIFICATIONS
diameter0.438 INCHES NOMINAL IN
materialSTEEL COMP 8620 OVERALL
drive_typeSLOTTED
grip_length0.450 INCHES NOMINAL IN
shank_neck_length0.080 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
end_item_identificationPUMP CTFGL 8GPM
turnlock_stud_head_styleFILLISTER
stud_shank_major_diameter0.250 INCHES NOMINAL IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-00-433-0026
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A4-45 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SURFACE TREATMENT: CADMIUM OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STUD SHANK MAJOR DIAMETER: 0.250 INCHES NOMINAL IN
•
GRIP LENGTH: 0.450 INCHES NOMINAL IN
•
MATERIAL ACCOMMODATED THICKNESS: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
•
DRIVE TYPE: SLOTTED
•
DIAMETER: 0.438 INCHES NOMINAL IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
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 TREATMENTCADMIUM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STUD SHANK MAJOR DIAMETER0.250 INCHES NOMINAL IN
GRIP LENGTH0.450 INCHES NOMINAL IN
MATERIAL ACCOMMODATED THICKNESS0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
DRIVE TYPESLOTTED
DIAMETER0.438 INCHES NOMINAL IN
TURNLOCK STUD SHANK STYLESTUD SHANK
MATERIALSTEEL COMP 8620 OVERALL
TURNLOCK STUD HEAD STYLEFILLISTER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
60762-1Interchangeable
interchangeable cross-reference
interchangeable
FA1246Interchangeable
interchangeable cross-reference
interchangeable
A445Interchangeable
interchangeable cross-reference
interchangeable
NC17728REVAPC1T04Interchangeable
interchangeable cross-reference
interchangeable
6433Interchangeable
interchangeable cross-reference
interchangeable
H25090MALInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A4-45?
A4-45 is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace A4-45?
There are 11 known substitutes for A4-45: 60762-1, FA1246, A445 and 8 more. Substitute compatibility should be verified for your specific system.
Is A4-45 still available?
A4-45 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026