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PartsTable / COMPONENT / S4-18U
S4-18U ✓ 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 SHAFT,STRAIGHT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303, end_similarity: IDENTICAL, overall_length: 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN, surface_finish: 8.0 MICROINCHES, first_end_style: PLAIN, first_end_diameter: 0.2496 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-458-8109, 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
S4-18U
NSN: 3040-00-458-8109
FSC: 3040
CAGE: 29440 — W. M. BERG, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 303
end_similarityIDENTICAL
overall_length1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
surface_finish8.0 MICROINCHES
first_end_stylePLAIN
first_end_diameter0.2496 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
NSN3040-00-458-8109
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,STRAIGHT TITLE COMPONENT PN S4-18U MFR SHAFT,STRAIGHT
KEY FEATURES
•
END SIMILARITY: IDENTICAL
•
FIRST END DIAMETER: 0.2496 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
•
SURFACE FINISH: 8.0 MICROINCHES
•
MATERIAL: STEEL COMP 303
•
FIRST END STYLE: PLAIN
TECHNICAL CHARACTERISTICS (FLIS)
END SIMILARITYIDENTICAL
FIRST END DIAMETER0.2496 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
SURFACE FINISH8.0 MICROINCHES
MATERIALSTEEL COMP 303
OVERALL LENGTH1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN
FIRST END STYLEPLAIN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
AN525-10-22Interchangeable
interchangeable cross-reference
interchangeable
A61-8Interchangeable
interchangeable cross-reference
interchangeable
NAS70CL328-563Interchangeable
interchangeable cross-reference
interchangeable
SS2-42Interchangeable
interchangeable cross-reference
interchangeable
AM492BAIC10Interchangeable
interchangeable cross-reference
interchangeable
S93Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S4-18U?
S4-18U is a SHAFT,STRAIGHT.
What parts can replace S4-18U?
There are 9 known substitutes for S4-18U: AN525-10-22, A61-8, NAS70CL328-563 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S4-18U?
S4-18U is cataloged in the Federal Logistics Information System (FLIS) under NSN 3040-00-458-8109. 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