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1635557-4 — INSERT,LEGEND,LIGHT INDICATOR

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

1635557-4: INSERT,LEGEND,LIGHT INDICATOR.

The INSERT,LEGEND,LIGHT INDICATOR is a the manufacturer industrial component. Key specifications include width: 0.645 INCHES NOMINAL0.645 INCHES NOMINAL IN, length: 0.645 INCHES NOMINAL0.645 INCHES NOMINAL IN, material: PLASTIC, inscription: CRO AUXCRO AUX, design_shape: SQUARESQUARE, features_provided: LEGENDLEGEND. This part is cataloged in the U.S.

Government catalog under NSN 6210-01-220-8586, 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
1635557-4
NSN: 6210-01-220-8586
FSC: 6210 — Indoor and Outdoor Electric Lighting Fixtures
CAGE: 05869 — RAYTHEON COMPANY DIV RMD STRATEGIC (USA)
SPECIFICATIONS
width0.645 INCHES NOMINAL0.645 INCHES NOMINAL IN
length0.645 INCHES NOMINAL0.645 INCHES NOMINAL IN
materialPLASTIC
inscriptionCRO AUXCRO AUX
design_shapeSQUARESQUARE
features_providedLEGENDLEGEND
NSN6210-01-220-8586
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available INSERT,LEGEND,LIGHT INDICATOR TITLE COMPONENT PN 1635557-4 MFR INSERT,LEGEND,LIGHT IN
KEY FEATURES
•
LENGTH: 0.645 INCHES NOMINAL0.645 INCHES NOMINAL IN
•
DESIGN SHAPE: SQUARESQUARE
•
INSCRIPTION: CRO AUXCRO AUX
•
FEATURES PROVIDED: LEGENDLEGEND
•
COLOR: BLACK INSCRIPTION
•
WIDTH: 0.645 INCHES NOMINAL0.645 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
TECHNICAL CHARACTERISTICS
LENGTH0.645 INCHES NOMINAL0.645 INCHES NOMINAL IN
DESIGN SHAPESQUARESQUARE
INSCRIPTIONCRO AUXCRO AUX
FEATURES PROVIDEDLEGENDLEGEND
COLORBLACK INSCRIPTION
COLORCLEAR INSCRIPTION BACKGROUND
WIDTH0.645 INCHES NOMINAL0.645 INCHES NOMINAL IN
MATERIALPLASTIC
OTHER ITEMS IN FSC 6210 — Indoor and Outdoor Electric Lighting Fixtures
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6210-00-000-0172 6210-00-001-1334 6210-00-001-1421 6210-00-001-1422 6210-00-001-1423 6210-00-001-1424 6210-00-001-1425 6210-00-001-1426
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 1635557-4?
1635557-4 is a INSERT,LEGEND,LIGHT INDICATOR.
What is the NSN for 1635557-4?
1635557-4 is cataloged in the U.S. Government catalog under NSN 6210-01-220-8586. 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.