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Technical Data Sheet
PartsTable / COMPONENT / 253040
253040 ✓ Verified by PartsTable
— · 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 EYESHIELD,OPTICAL INSTRUMENT is a the manufacturer optical transceiver module designed for high-speed data center interconnects. Key specifications include material: RUBBER, overall_length: 3.281 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 1240-00-166-7782, 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
253040
NSN: 1240-00-166-7782
FSC: 1240
CAGE: 49671 — LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN DIV LOCKHEED MARTIN (USA)
SPECIFICATIONS
materialRUBBER
overall_length3.281 INCHES NOMINAL IN
NSN1240-00-166-7782
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available EYESHIELD,OPTICAL INSTRUMENT TITLE COMPONENT PN 253040 MFR EYESHIELD,OPTICAL INST
KEY FEATURES
•
MATERIAL: RUBBER
TYPICAL APPLICATIONS
  • Data center switch-to-switch interconnects
  • Server-to-storage fabric connectivity
  • Long-distance fiber optic links
  • High-speed uplink connections (10G/25G/40G/100G)
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH3.281 INCHES NOMINAL IN
MATERIALRUBBER
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
265AInterchangeable
interchangeable cross-reference
interchangeable
90153Interchangeable
interchangeable cross-reference
interchangeable
103-232-799Interchangeable
interchangeable cross-reference
interchangeable
34C1Interchangeable
interchangeable cross-reference
interchangeable
5707-00Interchangeable
interchangeable cross-reference
interchangeable
B-1GS4-AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 253040?
253040 is a EYESHIELD,OPTICAL INSTRUMENT.
What parts can replace 253040?
There are 12 known substitutes for 253040: 265A, 90153, 103-232-799 and 9 more. Substitute compatibility should be verified for your specific system.
Is 253040 still available?
253040 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026