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959-51 — CAPACITOR,VARIABLE,AIR DIELECTRI

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

959-51: CAPACITOR,VARIABLE,AIR DIELECTRI.

CAPACITOR,VARIABLE,AIR DIELECTRI. Key specifications include material: PLASTIC CASE, thread_class: 2A A, thread_length: 0.188 INCHES NOMINAL IN, thread_series: UNS, overall_length: 0.656 INCHES NOMINAL IN, mounting_method: THREAD. This part is cataloged in the U.S.

Government catalog under NSN 6210-00-299-6858, 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→ 959-51
NSN: 6210-00-299-6858
NIINs: 002996858, 003324286, 010947221, 014215146
FSC: 6210 — Indoor and Outdoor Electric Lighting Fixtures
CAGE: 83330 — DIALIGHT CORPORATION (USA)
SPECIFICATIONS
materialPLASTIC CASE
thread_class2A A
thread_length0.188 INCHES NOMINAL IN
thread_seriesUNS
overall_length0.656 INCHES NOMINAL IN
mounting_methodTHREAD
thread_diameter0.562 INCHES IN
thread_quantity27 PER INCH
effective_length0.468 INCHES NOMINAL IN
overall_diameter0.656 INCHES NOMINAL IN
style_designatorSTOVEPIPE
thread_directionRIGHT-HAND
NSN6210-00-299-6858
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 959-51 MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
THREAD DIAMETER: 0.562 INCHES IN
•
OVERALL DIAMETER: 0.656 INCHES NOMINAL IN
•
THREAD SERIES: UNS
•
MOUNTING METHOD: THREAD
•
THREAD LENGTH: 0.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STOVEPIPE
•
SURFACE CONDITION: SMOOTH FACE
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
THREAD DIAMETER0.562 INCHES IN
OVERALL DIAMETER0.656 INCHES NOMINAL IN
THREAD SERIESUNS
MOUNTING METHODTHREAD
THREAD LENGTH0.188 INCHES NOMINAL IN
STYLE DESIGNATORSTOVEPIPE
OVERALL LENGTH0.656 INCHES NOMINAL IN
SURFACE CONDITIONSMOOTH FACE
SURFACE CONDITIONSMOOTH BACK
EFFECTIVE LENGTH0.468 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
BA98188-9Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 959-51?
959-51 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 959-51?
There is 1 known substitute for 959-51: BA98188-9. Substitute compatibility should be verified for your specific system.
What is the NSN for 959-51?
959-51 is cataloged in the U.S. Government catalog under NSN 6210-00-299-6858. 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.