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Technical Data Sheet
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A3-58 — Technical Data Sheet

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Legrand · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
2RS = sealed for life, ZZ = shielded re-greaseable ABEC grade: higher = tighter tolerance
ABEC-1 standard, ABEC-7+ for precision spindles
PRODUCT OVERVIEW

CAPACITOR,FIXED,CERAMIC DIELECTR. Key specifications include angle: 90.0 DEGREES, height: 1.187 INCHES NOMINAL IN, material: PLASTIC POLYESTER SINGLE WALL, design_type: RIGID-PLASTIC, corner_shape: SQUARE ALL CORNERS, accessory_type: VALVE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 3120-00-056-9761, 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→ A3-58
NSN: 3120-00-056-9761
FSC: 3120
CAGE: 59501 — UNISON INDUSTRIES LLC (USA)
SPECIFICATIONS
angle90.0 DEGREES
height1.187 INCHES NOMINAL IN
materialPLASTIC POLYESTER SINGLE WALL
design_typeRIGID-PLASTIC
corner_shapeSQUARE ALL CORNERS
accessory_typeVALVE
end_similarityIDENTICAL
overall_length5.870 INCHES NOMINAL IN
surface_finish10.0 MICROINCHES
assembly_methodSTITCHING
first_end_stylePLAIN
terminal_length0.280 INCHES MAXIMUM IN
NSN3120-00-056-9761
COMPONENT DIAGRAM
BALL BEARING — SEAL TYPE DETERMINES MAINTENANCE OD: — · BORE: — · WIDTH: — SEAL: Open · PN: A3-58 · Legrand ⚠ VERIFY BEFORE ORDERING ABEC grade: higher = tighter tolerance = higher cost. ABEC-1 is standard, ABEC-7+ for precision spindles. Open, shielded (ZZ), and sealed (2RS) versions have different max RPM ratings ✓ BROKER TIP 2RS = sealed for life (no maintenance). ZZ = shielded, re-greaseable. Open = must lubricate on install. Common interchange: 6205-2RS = 6205-2RSR = 6205-DDU (same bearing, different suffix) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
BODY INSIDE DIAMETER: 0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY 360 OVERALL
•
STYLE DESIGNATOR: SOLID, PLAIN, NO OUTSIDE FLANGES
•
BODY OUTSIDE DIAMETER: 0.1550 INCHES MINIMUM AND 0.1570 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
CORNER SHAPE: SQUARE ALL CORNERS
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
BODY INSIDE DIAMETER0.0570 INCHES MINIMUM AND 0.0670 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 360 OVERALL
STYLE DESIGNATORSOLID, PLAIN, NO OUTSIDE FLANGES
BODY OUTSIDE DIAMETER0.1550 INCHES MINIMUM AND 0.1570 INCHES MAXIMUM IN
OVERALL LENGTH0.1480 INCHES MINIMUM AND 0.1520 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
CORNER SHAPESQUARE ALL CORNERS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
452InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5066GInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
688-PInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
ST7M298-2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
301SK179InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
9350008InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A3-58?
A3-58 is a CAPACITOR,FIXED,CERAMIC DIELECTR manufactured by Legrand. It is classified as a MRO (MRO_GENERAL).
What parts can replace A3-58?
There are 9 known substitutes for A3-58: 452, 5066G, 688-P and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A3-58?
A3-58 is cataloged in the Federal Logistics Information System under NSN 3120-00-056-9761. 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: September 2026