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51-903-2 STOP — Technical Data Sheet

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— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The LENS,LIGHT is a the manufacturer industrial component. Key specifications include inscription: STOP BACK. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 6210-01-303-3134, 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
51-903-2 STOP
NSN: 6210-01-303-3134
FSC: 6210
CAGE: 23905 — L-3 COMMUNICATIONS WESTWOOD CORPORATION DBA EDI DIVISION DIV TANO DIVISION (USA)
SPECIFICATIONS
inscriptionSTOP BACK
NSN6210-01-303-3134
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LENS,LIGHT TITLE COMPONENT PN 51-903-2 STOP MFR LENS,LIGHT
KEY FEATURES
•
INSCRIPTION: STOP BACK
•
COLOR: RED LENS
TECHNICAL CHARACTERISTICS
INSCRIPTIONSTOP BACK
COLORRED LENS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
425-5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5210-00-221-2091InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
53123InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
51529InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
SC-5-MInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
042-1063-20InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51-903-2 STOP?
51-903-2 STOP is a LENS,LIGHT.
What parts can replace 51-903-2 STOP?
There are 7 known substitutes for 51-903-2 STOP: 425-5, 5210-00-221-2091, 53123 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 51-903-2 STOP?
51-903-2 STOP is cataloged in the Federal Logistics Information System under NSN 6210-01-303-3134. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: October 2026