PartsTable
Technical Data Sheet
MILW55021-1 ✓ 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 MILW55021-1 is a the manufacturer industrial component. Key specifications include color: BLACK FIRST POSITION PRIMARY INSULATION FIRST CONDUCTOR, material: COPPER CORE CONDUCTOR ALL CONDUCTORS, temp_rating: 65.0 CELSIUS AND 200.0 CELSIUS DEGC, conductor_form: STRANDED ALL CONDUCTORS, voltage_rating: 600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS, precious_material: SILVER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-076-5864, 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 MILW55021-1
NSN: 6145-00-076-5864
FSC: 6145
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
colorBLACK FIRST POSITION PRIMARY INSULATION FIRST CONDUCTOR
materialCOPPER CORE CONDUCTOR ALL CONDUCTORS
temp_rating65.0 CELSIUS AND 200.0 CELSIUS DEGC
conductor_formSTRANDED ALL CONDUCTORS
voltage_rating600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
precious_materialSILVER
surface_treatmentSILVER CORE CONDUCTOR ALL CONDUCTORS
conductor_quantity2
round_conductor_size12 AWG ALL CONDUCTORS
cross-sectional_shape_styleROUND
strand_awg_size_per_conductor25 ALL CONDUCTORS
strand_quantity_per_conductor19 ALL CONDUCTORS
NSN6145-00-076-5864
COMPONENT DIAGRAM
WIRE / CABLE — AMPACITY DEPENDS ON INSTALLATION CROSS-SECTION JACKET WIRE SPECIFICATIONS Conductor Size: — Conductor Count: — Voltage Rating: — Insulation: — Temp Rating: — PN: MILW55021-1 · 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
CONDUCTOR QUANTITY: 3
MATERIAL: COPPER CORE CONDUCTOR ALL CONDUCTORS
CONDUCTOR ARRANGEMENT AND QUANTITY: 1 TWISTED TOGETHER W/NO OUTER COVERING
COLOR: GRAY/GREY FIRST POSITION COVER ALL CONDUCTORS
SURFACE TREATMENT: TIN CORE CONDUCTOR ALL CONDUCTORS
VOLTAGE RATING: 600.0 AC MAXIMUM RATED WORKING VOLTAGE ALL CONDUCTORS
CONDUCTOR FORM: STRANDED ALL CONDUCTORS
STRAND AWG SIZE PER CONDUCTOR: 34 ALL CONDUCTORS
TECHNICAL CHARACTERISTICS (FLIS)
CONDUCTOR QUANTITY3
MATERIALCOPPER CORE CONDUCTOR ALL CONDUCTORS
CONDUCTOR ARRANGEMENT AND QUANTITY1 TWISTED TOGETHER W/NO OUTER COVERING
COLORGRAY/GREY FIRST POSITION COVER ALL CONDUCTORS
SURFACE TREATMENTTIN CORE CONDUCTOR ALL CONDUCTORS
VOLTAGE RATING600.0 AC MAXIMUM RATED WORKING VOLTAGE ALL CONDUCTORS
CONDUCTOR FORMSTRANDED ALL CONDUCTORS
STRAND AWG SIZE PER CONDUCTOR34 ALL CONDUCTORS
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC) ELEVENTH POSITION PRIMARY INSULATION SINGLE CONDUCTOR
TRACER COLORBLACK SECOND TRACER THIRD CONDUCTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
MPD1507Upgraded Successor
successor cross-reference
successor
9144226Upgraded Successor
successor cross-reference
successor
MIL-C-55021/2Upgraded Successor
successor cross-reference
successor
MIL-DTL-55021DUpgraded Successor
successor cross-reference
successor
E20C0-9SJUpgraded Successor
successor cross-reference
successor
MIL-DTL-55021/1Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILW55021-1?
MILW55021-1 is a MILW55021-1. It is classified as a MRO (MRO_GENERAL).
What parts can replace MILW55021-1?
There are 12 known substitutes for MILW55021-1: MPD1507, 9144226, MIL-C-55021/2 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILW55021-1?
MILW55021-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6145-00-076-5864. This indicates validated use in U.S. government and defense supply chains.
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