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Technical Data Sheet
PartsTable / MRO / MCOS-7
MCOS-7 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Stranded for flexible routing, solid for conduit THHN/THWN dual-rated — check both tables
Ampacity depends on installation method
PRODUCT OVERVIEW

The MCOS-7 is a the manufacturer industrial component. Key specifications include color: BLACK FIRST POSITION COVER FIRST CONDUCTOR, tracer_color: BLACK FIRST TRACER SEVENTH CONDUCTOR, conductor_form: STRANDED ALL CONDUCTORS, voltage_rating: 600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS, conductor_quantity: 77, round_conductor_size: 18 AWG ALL CONDUCTORS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-917-2342, 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→ MCOS-7
NSN: 6145-00-917-2342
FSC: 6145
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
colorBLACK FIRST POSITION COVER FIRST CONDUCTOR
tracer_colorBLACK FIRST TRACER SEVENTH CONDUCTOR
conductor_formSTRANDED ALL CONDUCTORS
voltage_rating600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
conductor_quantity77
round_conductor_size18 AWG ALL CONDUCTORS
cross-sectional_shape_styleROUNDROUND
strand_awg_size_per_conductor30 ALL CONDUCTORS
strand_quantity_per_conductor16 ALL CONDUCTORS
cross_section_outside_diameter0.585 INCHES NOMINAL0.585 INCHES NOMINAL IN
conductor_arrangement_and_quantity7 SINGLES
material_document_and_classificationASTM B3 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS
NSN6145-00-917-2342
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: MCOS-7 · OEM ⚠ VERIFY BEFORE ORDERING Ampacity depends on installation method — conduit ≠ free air ≠ underground. Same wire, different ratings. AWG sizing is inverse — smaller number = thicker wire (4 AWG > 12 AWG) ✓ BROKER TIP Stranded = flexible routing and vibration resistance. Solid = fixed conduit runs only. THHN/THWN = dual rated — check both dry and wet ampacity tables PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
TRACER COLOR: BLACK FIRST TRACER SEVENTH CONDUCTOR
•
CONDUCTOR ARRANGEMENT AND QUANTITY: 7 SINGLES
•
COLOR: BLUE SIXTH POSITION COVER THIRD CONDUCTOR
•
MATERIAL: COPPER CORE CONDUCTOR ALL CONDUCTORS
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B3 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS
•
ROUND CONDUCTOR SIZE: 18 AWG ALL CONDUCTORS
•
CROSS SECTION OUTSIDE DIAMETER: 0.585 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
TRACER COLORBLACK FIRST TRACER SEVENTH CONDUCTOR
CONDUCTOR ARRANGEMENT AND QUANTITY7 SINGLES
COLORBLUE SIXTH POSITION COVER THIRD CONDUCTOR
MATERIALCOPPER CORE CONDUCTOR ALL CONDUCTORS
COLORWHITE SECOND POSITION COVER SECOND CONDUCTOR
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B3 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS
ROUND CONDUCTOR SIZE18 AWG ALL CONDUCTORS
CROSS SECTION OUTSIDE DIAMETER0.585 INCHES NOMINAL IN
SPECIAL FEATURESOUTER JACKET COLOR BLACK
COLORBLACK FIRST POSITION COVER FIRST CONDUCTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
MIL-C-24643/4Upgraded Successor
successor cross-reference
successor
LSMCOS-4Upgraded Successor
successor cross-reference
successor
MILC915-11Upgraded Successor
successor cross-reference
successor
MIL-C-915/11Upgraded Successor
successor cross-reference
successor
LSMCOS-7Upgraded Successor
successor cross-reference
successor
M24643/4-05UOUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MCOS-7?
MCOS-7 is a MCOS-7. It is classified as a MRO (MRO_GENERAL).
What parts can replace MCOS-7?
There are 10 known substitutes for MCOS-7: MIL-C-24643/4, LSMCOS-4, MILC915-11 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MCOS-7?
MCOS-7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-917-2342. 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