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NMP166 — CAPACITOR,FIXED,ELECTROLYTIC

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

NMP166: CAPACITOR,FIXED,ELECTROLYTIC.

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: NICKEL ALLOY, seat_radius: 1.094 INCHES NOMINAL IN, overall_height: 4.375 INCHES NOMINAL IN, shoulder_width: 0.875 INCHES NOMINAL IN, shoulder_height: 1.188 INCHES NOMINAL IN, outside_diameter: 4.875 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4820-00-036-1768, 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
NMP166
NSN: 4820-00-036-1768
FSC: 4820 — Valves, Nonpowered
CAGE: 75954 — KUNKLE INDUSTRIES INC LONERGAN VALVE DIV (USA)
SPECIFICATIONS
materialNICKEL ALLOY
seat_radius1.094 INCHES NOMINAL IN
overall_height4.375 INCHES NOMINAL IN
shoulder_width0.875 INCHES NOMINAL IN
shoulder_height1.188 INCHES NOMINAL IN
outside_diameter4.875 INCHES NOMINAL IN
style_designatorPLUG
nominal_thread_size1.125 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNS
NSN4820-00-036-1768
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: NMP166 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SHOULDER WIDTH: 0.875 INCHES NOMINAL IN
•
SHOULDER HEIGHT: 1.188 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 4.875 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PLUG
•
NOMINAL THREAD SIZE: 1.125 INCHES IN
•
SEAT RADIUS: 1.094 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 18
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
OVERALL HEIGHT4.375 INCHES NOMINAL IN
SHOULDER WIDTH0.875 INCHES NOMINAL IN
SHOULDER HEIGHT1.188 INCHES NOMINAL IN
OUTSIDE DIAMETER4.875 INCHES NOMINAL IN
STYLE DESIGNATORPLUG
NOMINAL THREAD SIZE1.125 INCHES IN
SEAT RADIUS1.094 INCHES NOMINAL IN
THREAD QUANTITY PER INCH18
MATERIALNICKEL ALLOY
THREAD SERIES DESIGNATORUNS
SUBSTITUTES & CROSS-REFERENCES 2
18-5-12Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
005-500-0014Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NMP166?
NMP166 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace NMP166?
There are 2 known substitutes for NMP166: 18-5-12, 005-500-0014. Substitute compatibility should be verified for your specific system.
What is the NSN for NMP166?
NMP166 is cataloged in the U.S. Government catalog under NSN 4820-00-036-1768. 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.