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821841 — EYESHIELD,OPTICAL INSTRUMENT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

821841: EYESHIELD,OPTICAL INSTRUMENT.

The EYESHIELD,OPTICAL INSTRUMENT is a the manufacturer optical transceiver module designed for high-speed data center interconnects. Key specifications include material: RUBBER, attachment_method: PRESS FIT, viewing_end_inside_diameter: 2.060 INCHES IN, attachment_end_inside_diameter: 2.200 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 1240-00-026-8388, 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
821841
NSN: 1240-00-026-8388
FSC: 1240 — Optical Sighting and Ranging Equipment
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialRUBBER
attachment_methodPRESS FIT
viewing_end_inside_diameter2.060 INCHES IN
attachment_end_inside_diameter2.200 INCHES IN
NSN1240-00-026-8388
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available EYESHIELD,OPTICAL INSTRUMENT TITLE COMPONENT PN 821841 MFR EYESHIELD,OPTICAL INST
KEY FEATURES
•
ATTACHMENT END INSIDE DIAMETER: 2.200 INCHES IN
•
VIEWING END INSIDE DIAMETER: 2.060 INCHES IN
•
MATERIAL: RUBBER
•
ATTACHMENT METHOD: PRESS FIT
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
ATTACHMENT END INSIDE DIAMETER2.200 INCHES IN
VIEWING END INSIDE DIAMETER2.060 INCHES IN
MATERIALRUBBER
ATTACHMENT METHODPRESS FIT
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)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 821841?
821841 is a EYESHIELD,OPTICAL INSTRUMENT.
What is the NSN for 821841?
821841 is cataloged in the U.S. Government catalog under NSN 1240-00-026-8388. 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.