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2SK289 — LEAD,STORAGE BATTERY

✓ Government record, cited
— · GATE VALVE
PRODUCT OVERVIEW

2SK289: LEAD,STORAGE BATTERY.

The LEAD,STORAGE BATTERY 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 general_characteristics_item_description: THREE WAY,LEVER ACTUATED,4 PORTS,INTERNALLY THREADED,NPT 0.125-27. This part is cataloged in the U.S.

Government catalog under NSN 4820-01-042-3189, 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
2SK289
NSN: 4820-01-042-3189
FSC: 4820 — Valves, Nonpowered
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
general_characteristics_item_descriptionTHREE WAY,LEVER ACTUATED,4 PORTS,INTERNALLY THREADED,NPT 0.125-27
NSN4820-01-042-3189
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 2SK289 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: THREE WAY,LEVER ACTUATED,4 PORTS,INTERNALLY THREADED,NPT 0.125-27
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
GENERAL CHARACTERISTICS ITEM DESCRIPTIONTHREE WAY,LEVER ACTUATED,4 PORTS,INTERNALLY THREADED,NPT 0.125-27
SUBSTITUTES & CROSS-REFERENCES 2
280914Reference document
Same NSN cross-reference
Reference document — Secondary reference
EE60903Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2SK289?
2SK289 is a LEAD,STORAGE BATTERY.
What parts can replace 2SK289?
There are 2 known substitutes for 2SK289: 280914, EE60903. Substitute compatibility should be verified for your specific system.
What is the NSN for 2SK289?
2SK289 is cataloged in the U.S. Government catalog under NSN 4820-01-042-3189. 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.