PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILW8777Wire,electrical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6145-00-553-0833 · FSC 6145 · No Item Name Available
Verified by PartsTable
NSN 6145-00-553-0833 — this item is cataloged by the U.S. Government under National Stock Number 6145-00-553-0833. Primary manufacturer part number: MILW8777.
Features
  • Wire,electrical — FSC 6145
  • Conductor Form: STRANDED SINGLE CONDUCTOR
  • Surface Treatment: SILVER CORE CONDUCTOR SINGLE CONDUCTOR
  • Material: PLASTIC POLYESTER FOURTH POSITION JACKET SINGLE CONDUCTOR
  • Voltage Rating: 600.0 AC MAXIMUM RATED WORKING VOLTAGE SINGLE CONDUCTOR
  • Material: GLASS SECOND POSITION BRAID NON-METALLIC SINGLE CONDUCTOR
  • Strand Quantity Per Conductor: 1045 SINGLE CONDUCTOR
  • Round Conductor Size: 0 AWG SINGLE CONDUCTOR
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Applications requiring Plastic Polyester Fourth Position Jacket Single Conductor construction
General Description

The Wire,electrical, cataloged under National Stock Number 6145-00-553-0833, 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 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: FT.

Technical Specifications
ParameterValue
NSN6145-00-553-0833
Primary Part NumberMILW8777
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
Conductor FormSTRANDED SINGLE CONDUCTOR
Surface TreatmentSILVER CORE CONDUCTOR SINGLE CONDUCTOR
MaterialPLASTIC POLYESTER FOURTH POSITION JACKET SINGLE CONDUCTOR
Voltage Rating600.0 AC MAXIMUM RATED WORKING VOLTAGE SINGLE CONDUCTOR
MaterialGLASS SECOND POSITION BRAID NON-METALLIC SINGLE CONDUCTOR
Strand Quantity Per Conductor1045 SINGLE CONDUCTOR
Round Conductor Size0 AWG SINGLE CONDUCTOR
MaterialRUBBER SILICONE CLASS Q FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
Strand Awg Size Per Conductor30 SINGLE CONDUCTOR
ColorWHITE FIRST POSITION COVER SINGLE CONDUCTOR
MaterialPLASTIC POLYESTER THIRD POSITION BRAID NON-METALLIC SINGLE CONDUCTOR
ColorTAN SECOND POSITION COVER SINGLE CONDUCTOR
Temp Rating200.0 CELSIUS DEGC
MaterialCOPPER CORE CONDUCTOR SINGLE CONDUCTOR
Cross-Sectional Shape StyleROUND
Cross Section Outside Diameter0.535 INCHES NOMINAL IN
Conductor FormSTRANDED SINGLE CONDUCTOR
Surface TreatmentSILVER CORE CONDUCTOR SINGLE CONDUCTOR
MaterialPLASTIC POLYESTER FOURTH POSITION JACKET SINGLE CONDUCTOR
Voltage Rating600.0 AC MAXIMUM RATED WORKING VOLTAGE SINGLE CONDUCTOR
MaterialGLASS SECOND POSITION BRAID NON-METALLIC SINGLE CONDUCTOR
Strand Quantity Per Conductor1045 SINGLE CONDUCTOR
Round Conductor Size0 AWG SINGLE CONDUCTOR
MaterialRUBBER SILICONE CLASS Q FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
Strand Awg Size Per Conductor30 SINGLE CONDUCTOR
ColorWHITE FIRST POSITION COVER SINGLE CONDUCTOR
MaterialPLASTIC POLYESTER THIRD POSITION BRAID NON-METALLIC SINGLE CONDUCTOR
ColorTAN SECOND POSITION COVER SINGLE CONDUCTOR
Temp Rating200.0 CELSIUS DEGC
MaterialCOPPER CORE CONDUCTOR SINGLE CONDUCTOR
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6145-00-735-7764
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueFT
SMR CodeZN
Weight0.4150 lbs
Cube0.0020 cu ft
Verified Substitutes 9
Wire,electrical
6145-01-375-7565MIL-W-8777 SUCCESSOR
Wire,electrical
Defense Logistics Agency Dba Defense Supply Center Philadelphia
6145-00-553-0827 INTERCHANGEABLE
Wire,electrical
6145-00-553-0828 INTERCHANGEABLE
Wire,electrical
6145-00-553-0832 INTERCHANGEABLE
Wire,electrical
6145-00-553-0836 INTERCHANGEABLE
Wire,electrical
6145-00-553-0840 INTERCHANGEABLE
Wire,electrical
6145-01-300-5869 INTERCHANGEABLE
Wire,electrical
6145-01-300-5870 INTERCHANGEABLE
Wire,electrical
Cross-Reference Index
Part NumberManufacturer
MILW8777 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS25471-01 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-8777 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 6145-00-735-7764 Wire,electrical
6145-01-375-7565SUCCESSOR
WIRE,ELECTRICAL
MIL-W-8777
6145-00-553-0827INTERCHANGEABLE
WIRE,ELECTRICAL
6145-00-553-0828INTERCHANGEABLE
WIRE,ELECTRICAL
6145-00-553-0832INTERCHANGEABLE
WIRE,ELECTRICAL
6145-00-553-0836INTERCHANGEABLE
WIRE,ELECTRICAL
6145-00-553-0840INTERCHANGEABLE
WIRE,ELECTRICAL
6145-01-300-5869INTERCHANGEABLE
WIRE,ELECTRICAL
6145-01-300-5870INTERCHANGEABLE
WIRE,ELECTRICAL

Frequently Asked Questions

What is NSN 6145-00-553-0833?

NSN 6145-00-553-0833 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 6145-00-553-0833?

NSN 6145-00-553-0833 has 3 cross-referenced part numbers: MILW8777 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS25471-01 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-8777 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6145-00-553-0833?

There are 9 known substitutes for 6145-00-553-0833: 6145-00-735-7764, 6145-01-375-7565, 6145-00-553-0827 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILW8777?

Key specifications for MILW8777: Conductor Form: STRANDED SINGLE CONDUCTOR; Surface Treatment: SILVER CORE CONDUCTOR SINGLE CONDUCTOR; Material: PLASTIC POLYESTER FOURTH POSITION JACKET SINGLE CONDUCTOR; Voltage Rating: 600.0 AC MAXIMUM RATED WORKING VOLTAGE 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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