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PartsTable / COMPONENT / D3187
D3187 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

CAPACITOR,FIXED,PAPER DIELECTRIC. Key specifications include material: COPPER ALLOY BODY, body_width: 12.375 INCHES NOMINAL IN, body_height: 17.125 INCHES NOMINAL IN, body_length: 19.500 INCHES NOMINAL IN, end_item_name: PUMP, drive_end_style: RECESSED HEXAGON. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-839-5920, 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
D3187
NSN: 5315-00-839-5920
FSC: 5315
CAGE: 00141 — ROLLER BEARING CO OF AMERICA, INC DIV PIC DESIGN (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
body_width12.375 INCHES NOMINAL IN
body_height17.125 INCHES NOMINAL IN
body_length19.500 INCHES NOMINAL IN
end_item_namePUMP
drive_end_styleRECESSED HEXAGON
end_item_source38335
connection_stylePLAIN
operation_methodPOWERED
style_designatorTWIN STRAINER W/BOLTED COVER
thread_directionRIGHT-HAND EXTERNAL
component_quantity10
NSN5315-00-839-5920
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D3187 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
D124Interchangeable
interchangeable cross-reference
interchangeable
ADK-052Interchangeable
interchangeable cross-reference
interchangeable
24425Interchangeable
interchangeable cross-reference
interchangeable
25078Interchangeable
interchangeable cross-reference
interchangeable
D-3187Interchangeable
interchangeable cross-reference
interchangeable
25085Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D3187?
D3187 is a CAPACITOR,FIXED,PAPER DIELECTRIC.
What parts can replace D3187?
There are 20 known substitutes for D3187: D124, ADK-052, 24425 and 17 more. Substitute compatibility should be verified for your specific system.
Is D3187 still available?
D3187 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