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X303 — CAPACITOR,VARIABLE,MICA DIELECTR

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

X303: CAPACITOR,VARIABLE,MICA DIELECTR.

CAPACITOR,VARIABLE,MICA DIELECTR. Key specifications include material: ASBESTOS AND COPPER OVERALL, body_style: COMPRESSION, body_width: 0.875 INCHES NOMINAL IN, head_style: HEXAGON, body_height: 0.844 INCHES NOMINAL IN, body_length: 0.938 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-414-6725, 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→ X303
NSN: 5330-00-414-6725
NIINs: 004146725, 006817367, 016517191
FSC: 5330 — Packing and Gasket Materials
CAGE: 02978 — RENK AMERICA LLC DIV RENK AMERICA (USA)
SPECIFICATIONS
materialASBESTOS AND COPPER OVERALL
body_styleCOMPRESSION
body_width0.875 INCHES NOMINAL IN
head_styleHEXAGON
body_height0.844 INCHES NOMINAL IN
body_length0.938 INCHES NOMINAL IN
head_height0.250 INCHES NOMINAL IN
thread_length0.750 INCHES NOMINAL IN
inclosure_typeENCASED
fastener_length0.750 INCHES NOMINAL IN
outside_diameter0.750 INCHES NOMINAL IN
style_designatorCIRCULAR
NSN5330-00-414-6725
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: X303 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL THICKNESS: 0.062 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CIRCULAR
•
CROSS-SECTIONAL SHAPE STYLE: METAL AND METALLIC MATERIALS
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
APERTURE DIAMETER: 0.500 INCHES NOMINAL IN
•
MATERIAL: ASBESTOS AND COPPER OVERALL
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
CROSS-SECTIONAL THICKNESS0.062 INCHES NOMINAL IN
STYLE DESIGNATORCIRCULAR
CROSS-SECTIONAL SHAPE STYLEMETAL AND METALLIC MATERIALS
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
APERTURE DIAMETER0.500 INCHES NOMINAL IN
MATERIALASBESTOS AND COPPER OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
240380025Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is X303?
X303 is a CAPACITOR,VARIABLE,MICA DIELECTR. It is classified as a MRO (MRO_GENERAL).
What parts can replace X303?
There is 1 known substitute for X303: 240380025. Substitute compatibility should be verified for your specific system.
What is the NSN for X303?
X303 is cataloged in the U.S. Government catalog under NSN 5330-00-414-6725. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.