PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-C-55021/3Cable,power,electrical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6145-01-255-4700 · FSC 6145 · No Item Name Available
Verified by PartsTable
NSN 6145-01-255-4700 — this item is cataloged by the U.S. Government under National Stock Number 6145-01-255-4700. Primary manufacturer part number: MIL-C-55021/3.
Features
  • Cable,power,electrical — FSC 6145
  • Color: WHITE SECOND POSITION COVER SECOND CONDUCTOR
  • Precious Material and Location: SURFACE ALL CONDUCTORS SILVER AND SURFACE SHIELD,BRAID SILVER
  • Material Document and Classification: ASTM B298 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS
  • Precious Material: SILVER
  • Temp Rating: -65.0 CELSIUS AND 200.0 CELSIUS DEGC
  • Surface Treatment: SILVER CORE CONDUCTOR ALL CONDUCTORS
  • Voltage Rating: 600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Applications requiring Copper First Position Shield Braid Metallic Cable construction
General Description

The Cable,power,electrical, cataloged under National Stock Number 6145-01-255-4700, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 1 manufacturer, 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
NSN6145-01-255-4700
Primary Part NumberMIL-C-55021/3
Item NameCable,power,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
ColorWHITE SECOND POSITION COVER SECOND CONDUCTOR
Precious Material and LocationSURFACE ALL CONDUCTORS SILVER AND SURFACE SHIELD,BRAID SILVER
Material Document and ClassificationASTM B298 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS
Precious MaterialSILVER
Temp Rating-65.0 CELSIUS AND 200.0 CELSIUS DEGC
Surface TreatmentSILVER CORE CONDUCTOR ALL CONDUCTORS
Voltage Rating600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
MaterialCOPPER FIRST POSITION SHIELD BRAID METALLIC CABLE
ColorBLACK FIRST POSITION COVER FIRST CONDUCTOR
Cross-Sectional Shape StyleROUND
Conductor Quantity2
MaterialCOPPER CORE CONDUCTOR ALL CONDUCTORS
MaterialPLASTIC POLYTETRAFLUOROETHYLENE SECOND POSITION JACKET CABLE
Surface Treatment Document and ClassificationASTM B298 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR ALL CONDUCTORS
Conductor Arrangement and Quantity1 TWISTED PAIR
Round Conductor Size18 AWG ALL CONDUCTORS
MaterialPLASTIC POLYTETRAFLUOROETHYLENE FIRST POSITION PRIMARY INSULATION ALL CONDUCTORS
Strand Quantity Per Conductor7 ALL CONDUCTORS
MaterialSILVER SECOND POSITION SHIELD BRAID METALLIC CABLE
Strand Awg Size Per Conductor26 ALL CONDUCTORS
ColorWHITE SECOND POSITION COVER SECOND CONDUCTOR
Precious Material and LocationSURFACE ALL CONDUCTORS SILVER AND SURFACE SHIELD,BRAID SILVER
Material Document and ClassificationASTM B298 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS
Precious MaterialSILVER
Temp Rating-65.0 CELSIUS AND 200.0 CELSIUS DEGC
Surface TreatmentSILVER CORE CONDUCTOR ALL CONDUCTORS
Voltage Rating600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE ALL CONDUCTORS
MaterialCOPPER FIRST POSITION SHIELD BRAID METALLIC CABLE
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor6145-00-056-8184
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueFT
SMR CodeJF
Weight0.2500 lbs
Cube0.0004 cu ft
Verified Substitutes 12
6145-00-450-1947M27500-18RC1S06 SUCCESSOR
Wire,electrical
National Electrical Mfrs Assn Dba Nema
Cable,special Purpose,electrical
Cable,special Purpose,electrical
Cable,special Purpose,electrical
Cable,power,electrical
Cable,special Purpose,electrical
6145-00-762-109983318 SUCCESSOR
Cable,special Purpose,electrical
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
Cable,special Purpose,electrical
Cable,special Purpose,electrical
6145-01-038-88241943466-9 SUCCESSOR
Cable,power,electrical
Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div
Cross-Reference Index
Part NumberManufacturer
MIL-C-55021/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-55021/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-55021/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
EC18U0-9STX Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
E18C0-9STX Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
SUCCESSOR 6145-00-056-8184 Cable,power,electrical
6145-00-450-1947SUCCESSOR
WIRE,ELECTRICAL
M27500-18RC1S06
6145-01-509-6754SUCCESSOR
CABLE,SPECIAL PURPOSE,ELECTRICAL
6145-01-509-6780SUCCESSOR
CABLE,SPECIAL PURPOSE,ELECTRICAL
6145-01-515-3906SUCCESSOR
CABLE,SPECIAL PURPOSE,ELECTRICAL
6145-00-060-5780SUCCESSOR
CABLE,SPECIAL PURPOSE,ELECTRICAL
6145-00-762-1099SUCCESSOR
CABLE,SPECIAL PURPOSE,ELECTRICAL
83318
6145-00-814-1037SUCCESSOR
CABLE,SPECIAL PURPOSE,ELECTRICAL
6145-00-825-6924SUCCESSOR
CABLE,SPECIAL PURPOSE,ELECTRICAL
6145-01-038-8824SUCCESSOR
CABLE,POWER,ELECTRICAL
1943466-9
6145-01-138-1424SUCCESSOR
WIRE,ELECTRICAL
44A0111-16-2
6145-01-276-5867SUCCESSOR
CABLE,SPECIAL PURPOSE,ELECTRICAL
ED741547-09-0

Frequently Asked Questions

What is NSN 6145-01-255-4700?

NSN 6145-01-255-4700 is a Cable,power,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 6145-01-255-4700?

NSN 6145-01-255-4700 has 5 cross-referenced part numbers: MIL-C-55021/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-55021/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-55021/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), EC18U0-9STX (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), E18C0-9STX (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6145-01-255-4700?

There are 12 known substitutes for 6145-01-255-4700: 6145-00-450-1947, 6145-01-509-6754, 6145-01-509-6780 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-C-55021/3?

Key specifications for MIL-C-55021/3: Color: WHITE SECOND POSITION COVER SECOND CONDUCTOR; Precious Material and Location: SURFACE ALL CONDUCTORS SILVER AND SURFACE SHIELD,BRAID SILVER; Material Document and Classification: ASTM B298 ASSN STD SINGLE MATERIAL RESPONSE CORE CONDUCTOR ALL CONDUCTORS; Special Features: PRIMARY INSULATION CONFORMS TO L-P-403 TYPE 3. 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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