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258256 — SUPPORT,OPTICAL INSTRUMENT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

258256: SUPPORT,OPTICAL INSTRUMENT.

The SUPPORT,OPTICAL INSTRUMENT is a the manufacturer optical transceiver module designed for high-speed data center interconnects. Key specifications include material: STEEL, rung_width: 0.250 INCHES NOMINAL IN, overall_width: 5.500 INCHES NOMINAL IN, rung_quantity: 48, rung_thickness: 0.750 INCHES NOMINAL IN, outside_diameter: 10.687 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3010-01-285-9685, 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
258256
NSN: 3010-01-285-9685
FSC: 3010 — Torque Converters and Speed Changers
CAGE: 21444 — REXNORD INDUSTRIES LLC (USA)
SPECIFICATIONS
materialSTEEL
rung_width0.250 INCHES NOMINAL IN
overall_width5.500 INCHES NOMINAL IN
rung_quantity48
rung_thickness0.750 INCHES NOMINAL IN
outside_diameter10.687 INCHES NOMINAL IN
section_quantity2
special_featuresMATL HARDNESS RATING,NO RATING;MATL,STEEL
NSN3010-01-285-9685
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SUPPORT,OPTICAL INSTRUMENT TITLE COMPONENT PN 258256 MFR SUPPORT,OPTICAL INSTRU
KEY FEATURES
•
SECTION QUANTITY: 2
•
OUTSIDE DIAMETER: 10.687 INCHES NOMINAL IN
•
RUNG WIDTH: 0.250 INCHES NOMINAL IN
•
RUNG THICKNESS: 0.750 INCHES NOMINAL IN
•
MATERIAL: STEEL
•
RUNG QUANTITY: 48
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
SECTION QUANTITY2
OVERALL WIDTH5.500 INCHES NOMINAL IN
OUTSIDE DIAMETER10.687 INCHES NOMINAL IN
RUNG WIDTH0.250 INCHES NOMINAL IN
RUNG THICKNESS0.750 INCHES NOMINAL IN
SPECIAL FEATURESMATL HARDNESS RATING,NO RATING;MATL,STEEL
MATERIALSTEEL
RUNG QUANTITY48
SUBSTITUTES & CROSS-REFERENCES 2
246691Reference document
Same NSN cross-reference
Reference document — Secondary reference
1193363Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 258256?
258256 is a SUPPORT,OPTICAL INSTRUMENT.
What parts can replace 258256?
There are 2 known substitutes for 258256: 246691, 1193363. Substitute compatibility should be verified for your specific system.
What is the NSN for 258256?
258256 is cataloged in the U.S. Government catalog under NSN 3010-01-285-9685. 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.