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A-4 ✓ 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,FIXED,MICA DIELECTRIC. Key specifications include shape: RECTANGULAR, width: 0.875 INCHES NOMINAL IN, length: 1.500 INCHES NOMINAL IN, diameter: 0.156 INCHES NOMINAL STRAND IN, jaw_type: SMOOTH, material: PLASTIC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5120-00-013-7621, 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
A-4
NSN: 5120-00-013-7621
FSC: 5120
CAGE: 63496 — WAHL CLIPPER CORPORATION (USA)
SPECIFICATIONS
shapeRECTANGULAR
width0.875 INCHES NOMINAL IN
length1.500 INCHES NOMINAL IN
diameter0.156 INCHES NOMINAL STRAND IN
jaw_typeSMOOTH
materialPLASTIC
end_styleONE HOOK END BOTH ENDS
end_length5.630 INCHES NOMINAL BOTH ENDS IN
inscriptionHOURS
blade_length1.625 INCHES NOMINAL IN
center_styleSQUARE TYPE
bore_diameter0.2500 INCHES NOMINAL IN
NSN5120-00-013-7621
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,FIXED,MICA DIELECTRIC TITLE COMPONENT PN A-4 MFR CAPACITOR,FIXED,MICA D
KEY FEATURES
•
BLADE LENGTH: 1.625 INCHES NOMINAL IN
•
DRIVE SURFACE SIZE: 0.250 INCHES NOMINAL SINGLE END IN
•
WRENCHING SURFACE SHAPE: HEXAGON SINGLE END EXTERNAL
•
MATERIAL: STEEL OVERALL
•
OUTSIDE DIAMETER: 0.507 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
•
STYLE DESIGNATOR: HEXAGON
•
WRENCHING SURFACE SIZE: 0.125 INCHES NOMINAL SINGLE END 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)
BLADE LENGTH1.625 INCHES NOMINAL IN
DRIVE SURFACE SIZE0.250 INCHES NOMINAL SINGLE END IN
WRENCHING SURFACE SHAPEHEXAGON SINGLE END EXTERNAL
MATERIALSTEEL OVERALL
OUTSIDE DIAMETER0.507 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
STYLE DESIGNATORHEXAGON
WRENCHING SURFACE SIZE0.125 INCHES NOMINAL SINGLE END IN
OVERALL LENGTH2.625 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
GGG-W-641 TY4CL3STAInterchangeable
Same NIIN cross-reference
interchangeable
GGG-W-641Interchangeable
Same NIIN cross-reference
interchangeable
2504Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-4?
A-4 is a CAPACITOR,FIXED,MICA DIELECTRIC.
What parts can replace A-4?
There are 3 known substitutes for A-4: GGG-W-641 TY4CL3STA, GGG-W-641, 2504. Substitute compatibility should be verified for your specific system.
Is A-4 still available?
A-4 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