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PartsTable / MRO / C3581 ITEM 18
C3581 ITEM 18 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
SAS cables have specific lane counts: 4i (internal) or 4e (external) Cable length matters — too short won't reach, too long creates clutter
Verify connector type on BOTH ends — many SAS cables are asymmetric
PRODUCT OVERVIEW

The C3581 ITEM 18 is a the manufacturer industrial component. Key specifications include terminal_type: TAB, SOLDER LUG, special_features: INSTANTANEOUS AUX CONTACT BLOCK 4 CONTACTS 1 PER RELAY 3 NORMALLY OPEN 1 NORMALLY CLOSED, structural_design: NONPILE-UP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5999-01-511-6502, 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
MRO→ MRO_GENERAL→ C3581 ITEM 18
NSN: 5999-01-511-6502
FSC: 5999
CAGE: 12437 — THERN INC (USA)
SPECIFICATIONS
terminal_typeTAB, SOLDER LUG
contact_quantity4
special_featuresINSTANTANEOUS AUX CONTACT BLOCK 4 CONTACTS 1 PER RELAY 3 NORMALLY OPEN 1 NORMALLY CLOSED
structural_designNONPILE-UP
NSN5999-01-511-6502
COMPONENT DIAGRAM
CONN A SFF-8482 CONN B SFF-8087 LENGTH: SAS CABLE ASSEMBLY | SFF-8482 to SFF-8087 Cable length: | SAS | Shielded TITLE CABLE ASSY PN C3581 ITEM 18 MFR C3581 ITEM 18
KEY FEATURES
•
CONTACT QUANTITY: 4
•
STRUCTURAL DESIGN: NONPILE-UP
•
TERMINAL TYPE: TAB, SOLDER LUG
TECHNICAL CHARACTERISTICS (FLIS)
CONTACT QUANTITY4
STRUCTURAL DESIGNNONPILE-UP
TERMINAL TYPETAB, SOLDER LUG
SPECIAL FEATURESINSTANTANEOUS AUX CONTACT BLOCK 4 CONTACTS 1 PER RELAY 3 NORMALLY OPEN 1 NORMALLY CLOSED
CONTACT QUANTITY4
STRUCTURAL DESIGNNONPILE-UP
TERMINAL TYPETAB, SOLDER LUG
SPECIAL FEATURESINSTANTANEOUS AUX CONTACT BLOCK 4 CONTACTS 1 PER RELAY 3 NORMALLY OPEN 1 NORMALLY CLOSED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
50674Interchangeable
interchangeable cross-reference
interchangeable
1422Interchangeable
interchangeable cross-reference
interchangeable
X93T1Interchangeable
interchangeable cross-reference
interchangeable
A7646Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C3581 ITEM 18?
C3581 ITEM 18 is a C3581 ITEM 18. It is classified as a MRO (MRO_GENERAL).
What parts can replace C3581 ITEM 18?
There are 4 known substitutes for C3581 ITEM 18: 50674, 1422, X93T1 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C3581 ITEM 18?
C3581 ITEM 18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5999-01-511-6502. 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