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Technical Data Sheet
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251-4689 — INDICATOR,SPECIAL

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

251-4689: INDICATOR,SPECIAL.

The INDICATOR,SPECIAL is a the manufacturer industrial component. Key specifications include end_item_identification: ENGINE DIESLE, MODEL 3, part_name_assigned_by_controlling_agency: INDICATOR-PROTECTION. This part is cataloged in the U.S.

Government catalog under NSN 2990-01-665-8307, 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
251-4689
NSN: 2990-01-665-8307
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
end_item_identificationENGINE DIESLE, MODEL 3
part_name_assigned_by_controlling_agencyINDICATOR-PROTECTION
NSN2990-01-665-8307
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available INDICATOR,SPECIAL TITLE COMPONENT PN 251-4689 MFR INDICATOR,SPECIAL
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYINDICATOR-PROTECTION
END ITEM IDENTIFICATIONENGINE DIESLE, MODEL 3
OTHER ITEMS IN FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2990-00-096-8607 2990-00-390-3445 2990-00-459-7255 2990-00-536-2962 2990-00-903-8226 2990-01-151-5443
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 251-4689?
251-4689 is a INDICATOR,SPECIAL.
What is the NSN for 251-4689?
251-4689 is cataloged in the U.S. Government catalog under NSN 2990-01-665-8307. 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.