PartsTable
Technical Data Sheet
PartsTable / MRO / 581R987H03
581R987H03 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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,VARIABLE,AIR DIELECTRI. Key specifications include body_style: PISTONPISTON, body_length: 0.477 INCHES NOMINAL0.477 INCHES NOMINAL IN, thread_class: 2A2A, bushing_shape: ROUNDROUND, overall_width: 0.281 INCHES NOMINAL0.281 INCHES NOMINAL IN, bushing_length: 0.160 INCHES NOMINAL0.160 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-01-097-6692, 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→ 581R987H03
NSN: 5910-01-097-6692
FSC: 5910
CAGE: 48306 — NORTHROP GRUMMAN SUPPORT SERVICES CORP (USA)
SPECIFICATIONS
body_stylePISTONPISTON
body_length0.477 INCHES NOMINAL0.477 INCHES NOMINAL IN
thread_class2A2A
bushing_shapeROUNDROUND
overall_width0.281 INCHES NOMINAL0.281 INCHES NOMINAL IN
bushing_length0.160 INCHES NOMINAL0.160 INCHES NOMINAL IN
inclosure_typeENCASEDENCASED
overall_height0.430 INCHES NOMINAL0.430 INCHES NOMINAL IN
overall_length0.570 INCHES NOMINAL0.570 INCHES NOMINAL IN
bushing_diameter0.234 INCHES NOMINAL0.234 INCHES NOMINAL IN
overall_diameter0.290 INCHES NOMINAL0.290 INCHES NOMINAL IN
nominal_thread_size0.078 INCHES0.078 INCHES IN
NSN5910-01-097-6692
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAPACITOR,VARIABLE,AIR DIELECTRI TITLE COMPONENT PN 581R987H03 MFR CAPACITOR,VARIABLE,AIR
KEY FEATURES
•
THREAD QUANTITY PER INCH: 6464
•
INSULATION DC RESISTANCE AT 25 DEG CELSIUS: 1000.0 GIGOHMS1000.0 GIGOHMS
•
NONDERATED OPERATING TEMP: -65.0 CELSIUS MINIMUM AND -65.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM125.0 CELSIUS MAXIMUM DEGC
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 THREADED BUSHING1 THREADED BUSHING
•
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATOR: UNSUNS
•
TEMP COEFFICIENT OF CAPACITANCE IN PPM PER DEG CELSIUS: 0.0 SINGLE SECTION0.0 SINGLE SECTION
•
BUSHING SHAPE: ROUNDROUND
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)
THREAD QUANTITY PER INCH6464
INSULATION DC RESISTANCE AT 25 DEG CELSIUS1000.0 GIGOHMS1000.0 GIGOHMS
OVERALL LENGTH0.570 INCHES NOMINAL0.570 INCHES NOMINAL IN
NONDERATED OPERATING TEMP-65.0 CELSIUS MINIMUM AND -65.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM125.0 CELSIUS MAXIMUM DEGC
MOUNTING FACILITY TYPE AND QUANTITY1 THREADED BUSHING1 THREADED BUSHING
MOUNTING FACILITY SCREW THREAD SERIES DESIGNATORUNSUNS
TEMP COEFFICIENT OF CAPACITANCE IN PPM PER DEG CELSIUS0.0 SINGLE SECTION0.0 SINGLE SECTION
BUSHING SHAPEROUNDROUND
NONDERATED VOLTAGE RATING AND TYPE250.0 DC CONTINUOUS SINGLE SECTION250.0 DC CONTINUOUS SINGLE SECTION
ADJUSTMENT DEVICE TORQUE1.000 INCH-OUNCES MINIMUM AND 1.000 INCH-OUNCES MINIMUM AND 5.000 INCH-OUNCES MAXIMUM5.000 INCH-OUNCES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
8093Interchangeable
interchangeable cross-reference
interchangeable
SM-B-529168Interchangeable
interchangeable cross-reference
interchangeable
13739Interchangeable
interchangeable cross-reference
interchangeable
08093Interchangeable
interchangeable cross-reference
interchangeable
08018B4146Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 581R987H03?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 581R987H03?
581R987H03 is a CAPACITOR,VARIABLE,AIR DIELECTRI. It is classified as a MRO (MRO_GENERAL).
What parts can replace 581R987H03?
There are 5 known substitutes for 581R987H03: 8093, SM-B-529168, 13739 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 581R987H03?
581R987H03 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5910-01-097-6692. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 581R987H03

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026