PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-W-16878/3Wire,electrical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6145-00-545-7209 · FSC 6145 · No Item Name Available
Verified by PartsTable
NSN 6145-00-545-7209 — this item is cataloged by the U.S. Government under National Stock Number 6145-00-545-7209. Primary manufacturer part number: MIL-W-16878/3.
Features
  • Wire,electrical — FSC 6145
  • Cross Section Outside Diameter: 0.355 INCHES NOMINAL IN
  • Temp Rating: 105.0 CELSIUS DEGC
  • Conductor Form: STRANDED SINGLE CONDUCTOR
  • Material: COPPER ALLOY 101 OR COPPER ALLOY 102 CORE CONDUCTOR SINGLE CONDUCTOR
  • Round Conductor Size: 4 AWG SINGLE CONDUCTOR
  • Color: BROWN FIRST POSITION COVER SINGLE CONDUCTOR
  • Voltage Rating: 3000.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Applications requiring Copper Alloy 101 or Copper Alloy 102 Core Conductor Single Conductor construction
General Description

The Wire,electrical, cataloged under National Stock Number 6145-00-545-7209, is classified within Federal Supply Class 6145 (No Item Name Available) of the Electric Wire, Power, and Distribution Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: FT.

Technical Specifications
ParameterValue
NSN6145-00-545-7209
Primary Part NumberMIL-W-16878/3
Item NameWire,electrical
FSC / FSG6145 / 61 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Cross Section Outside Diameter0.355 INCHES NOMINAL IN
Temp Rating105.0 CELSIUS DEGC
Conductor FormSTRANDED SINGLE CONDUCTOR
MaterialCOPPER ALLOY 101 OR COPPER ALLOY 102 CORE CONDUCTOR SINGLE CONDUCTOR
Round Conductor Size4 AWG SINGLE CONDUCTOR
ColorBROWN FIRST POSITION COVER SINGLE CONDUCTOR
Voltage Rating3000.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
Strand Awg Size Per Conductor30 SINGLE CONDUCTOR
Nondefinitive Spec/std DataD TYPE
MaterialPLASTIC POLYVINYL CHLORIDE (PVC) FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
Material Document and ClassificationASTM B33 ASSN STD ALL MATERIAL RESPONSES CORE CONDUCTOR SINGLE CONDUCTOR
Surface Treatment Document and ClassificationASTM B33-63 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
Strand Quantity Per Conductor420 SINGLE CONDUCTOR
Departure From Cited DocumentAS MODIFIED BY STRAND QUANTITY PER CONDUCTOR AND AWG STRAND SIZE PER CONDUCTOR
Surface TreatmentTIN CORE CONDUCTOR SINGLE CONDUCTOR
Cross-Sectional Shape StyleROUND
Cross Section Outside Diameter0.355 INCHES NOMINAL IN
Temp Rating105.0 CELSIUS DEGC
Conductor FormSTRANDED SINGLE CONDUCTOR
MaterialCOPPER ALLOY 101 OR COPPER ALLOY 102 CORE CONDUCTOR SINGLE CONDUCTOR
Round Conductor Size4 AWG SINGLE CONDUCTOR
ColorBROWN FIRST POSITION COVER SINGLE CONDUCTOR
Voltage Rating3000.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
Strand Awg Size Per Conductor30 SINGLE CONDUCTOR
Nondefinitive Spec/std DataD TYPE
MaterialPLASTIC POLYVINYL CHLORIDE (PVC) FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
Material Document and ClassificationASTM B33 ASSN STD ALL MATERIAL RESPONSES CORE CONDUCTOR SINGLE CONDUCTOR
Surface Treatment Document and ClassificationASTM B33-63 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
Strand Quantity Per Conductor420 SINGLE CONDUCTOR
Departure From Cited DocumentAS MODIFIED BY STRAND QUANTITY PER CONDUCTOR AND AWG STRAND SIZE PER CONDUCTOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueFT
SMR CodeJN
Verified Substitutes 12
Wire,electrical
Wire,electrical
Wire,electrical
Wire,electrical
Wire,electrical
Wire,electrical
Wire,electrical
Wire,electrical
Wire,electrical
Wire,electrical
Cross-Reference Index
Part NumberManufacturer
MIL-W-16878/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
273-1369P1 Raytheon Company Div Corp (USA)
273-1369P1 Raytheon Company Dba Raytheon Co (USA)
273-1369P1 Raytheon Company (USA)
BUD42030UBR0WN Rscc Wire & Cable Llc (USA)
M16878/3BRN1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
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6145-00-643-0657SUCCESSOR
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Frequently Asked Questions

What is NSN 6145-00-545-7209?

NSN 6145-00-545-7209 is a Wire,electrical, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6145 (No Item Name Available). Status: active.

What are the part numbers for NSN 6145-00-545-7209?

NSN 6145-00-545-7209 has 6 cross-referenced part numbers: MIL-W-16878/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 273-1369P1 (Raytheon Company Div Corp), 273-1369P1 (Raytheon Company Dba Raytheon Co), 273-1369P1 (Raytheon Company), BUD42030UBR0WN (Rscc Wire & Cable Llc) and 1 more.

What NSN replaces 6145-00-545-7209?

There are 12 known substitutes for 6145-00-545-7209: 6145-00-801-4621, 6145-00-058-8564, 6145-00-435-9225 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-W-16878/3?

Key specifications for MIL-W-16878/3: Cross Section Outside Diameter: 0.355 INCHES NOMINAL IN; Temp Rating: 105.0 CELSIUS DEGC; Conductor Form: STRANDED SINGLE CONDUCTOR; Material: COPPER ALLOY 101 OR COPPER ALLOY 102 CORE CONDUCTOR SINGLE CONDUCTOR. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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