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Technical Data Sheet
PartsTable / MRO / MILW8777
MILW8777 ✓ 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 MILW8777 is a the manufacturer industrial component. Key specifications include material: COPPER CORE CONDUCTOR SINGLE CONDUCTOR, conductor_form: STRANDED SINGLE CONDUCTOR, voltage_rating: 600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR, precious_material: SILVER, surface_treatment: SILVER CORE CONDUCTOR SINGLE CONDUCTOR, round_conductor_size: 6 AWG SINGLE CONDUCTOR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-553-0827, 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→ MILW8777
NSN: 6145-00-553-0827
FSC: 6145
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialCOPPER CORE CONDUCTOR SINGLE CONDUCTOR
conductor_formSTRANDED SINGLE CONDUCTOR
voltage_rating600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
precious_materialSILVER
surface_treatmentSILVER CORE CONDUCTOR SINGLE CONDUCTOR
round_conductor_size6 AWG SINGLE CONDUCTOR
cross-sectional_shape_styleROUND
strand_quantity_per_conductor133 SINGLE CONDUCTOR
cross_section_outside_diameter0.357 INCHES NOMINAL IN
precious_material_and_locationCONDUCTOR COATING SILVER
NSN6145-00-553-0827
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: MILW8777 · 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
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
CONDUCTOR FORM: STRANDED SINGLE CONDUCTOR
•
SURFACE TREATMENT: SILVER CORE CONDUCTOR SINGLE CONDUCTOR
•
CROSS SECTION OUTSIDE DIAMETER: 0.585 INCHES NOMINAL IN
•
COLOR: WHITE OR TAN FIRST POSITION COVER SINGLE CONDUCTOR
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B298 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
•
MATERIAL: COPPER CORE CONDUCTOR SINGLE CONDUCTOR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-W-343,SOFT FED SPEC SINGLE MATERIAL RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLEROUND
CONDUCTOR FORMSTRANDED SINGLE CONDUCTOR
SURFACE TREATMENTSILVER CORE CONDUCTOR SINGLE CONDUCTOR
CROSS SECTION OUTSIDE DIAMETER0.585 INCHES NOMINAL IN
COLORWHITE OR TAN FIRST POSITION COVER SINGLE CONDUCTOR
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B298 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
MATERIALCOPPER CORE CONDUCTOR SINGLE CONDUCTOR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-W-343,SOFT FED SPEC SINGLE MATERIAL RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
STRAND QUANTITY PER CONDUCTOR1330 SINGLE CONDUCTOR
ROUND CONDUCTOR SIZE00 AWG SINGLE CONDUCTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
20GAUpgraded Successor
successor cross-reference
successor
MILW8777Upgraded Successor
successor cross-reference
successor
L443D16Upgraded Successor
successor cross-reference
successor
MTSK1927ADDInterchangeable
interchangeable cross-reference
interchangeable
W77-14Interchangeable
interchangeable cross-reference
interchangeable
PP13571Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILW8777?
MILW8777 is a MILW8777. It is classified as a MRO (MRO_GENERAL).
What parts can replace MILW8777?
There are 24 known substitutes for MILW8777: 20GA, MILW8777, L443D16 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILW8777?
MILW8777 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-553-0827. 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