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51858 ✓ 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 FILTER ELEMENT,FLUID is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-077-1245, 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
51858
NSN: 3040-00-077-1245
FSC: 3040
CAGE: 82340 — L3HARRIS TECHNOLOGIES, INC. DIV SPACE AND AIRBORNE SYSTEMS (USA)
SPECIFICATIONS
Part Number51858
NSN3040-00-077-1245
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER ELEMENT,FLUID TITLE COMPONENT PN 51858 MFR FILTER ELEMENT,FLUID
KEY FEATURES
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL COMP 303
•
END SIMILARITY: NOT IDENTICAL
•
FIRST END GROOVE WIDTH: 0.0290 INCHES NOMINAL IN
•
SURFACE FINISH: 32.0 MICROINCHES
•
FIRST END GROOVE DIAMETER: 0.2310 INCHES NOMINAL IN
•
SECOND END STYLE: CIRCULAR GROOVED AND FLATTED
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSECOND END HAS ADDITIONAL FLAT,IDENTICAL TO FIRST FLAT,90 DEGREES APART
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE
MATERIALSTEEL COMP 303
END SIMILARITYNOT IDENTICAL
FIRST END GROOVE WIDTH0.0290 INCHES NOMINAL IN
SURFACE FINISH32.0 MICROINCHES
FIRST END GROOVE DIAMETER0.2310 INCHES NOMINAL IN
SECOND END STYLECIRCULAR GROOVED AND FLATTED
FIRST END DIAMETER0.2500 INCHES NOMINAL IN
FIRST END DISTANCE FROM END TO GROOVE0.538 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
1858Interchangeable
interchangeable cross-reference
interchangeable
7502Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 51858?
51858 is a FILTER ELEMENT,FLUID.
What parts can replace 51858?
There are 2 known substitutes for 51858: 1858, 7502. Substitute compatibility should be verified for your specific system.
What is the NSN for 51858?
51858 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-077-1245. 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: July 2026