PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1866-3Wire,electrical

Belden, Inc. · NSN 6145-00-803-0663 · FSC 6145 · No Item Name Available
Verified by PartsTable
NSN 6145-00-803-0663 — this item is cataloged by the U.S. Government under National Stock Number 6145-00-803-0663. Primary manufacturer part number: 1866-3.
Features
  • Wire,electrical — FSC 6145
  • Temp Rating: -55.0 CELSIUS AND 115.0 CELSIUS DEGC
  • Cross-Sectional Shape Style: ROUND
  • Conductor Form: STRANDED SINGLE CONDUCTOR
  • Surface Treatment: TIN CORE CONDUCTOR SINGLE CONDUCTOR
  • Surface Treatment Document and Classification: ASTM B33-63 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
  • Round Conductor Size: 20 AWG SINGLE CONDUCTOR
  • Cross Section Outside Diameter: 0.063 INCHES NOMINAL IN
Applications
  • Electrical power distribution
  • Signal transmission
  • Equipment interconnection
  • Applications requiring Plastic Polyvinyl Chloride (pvc) First Position Primary Insulation Single Conductor construction
General Description

The Wire,electrical, cataloged under National Stock Number 6145-00-803-0663, 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 Belden, Inc.. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: FT.

Technical Specifications
ParameterValue
NSN6145-00-803-0663
Primary Part Number1866-3
Item NameWire,electrical
FSC / FSG6145 / 61 — No Item Name Available
ManufacturerBelden, Inc.
StatusCANCELLED
Temp Rating-55.0 CELSIUS AND 115.0 CELSIUS DEGC
Cross-Sectional Shape StyleROUND
Conductor FormSTRANDED SINGLE CONDUCTOR
Surface TreatmentTIN CORE CONDUCTOR SINGLE CONDUCTOR
Surface Treatment Document and ClassificationASTM B33-63 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
Round Conductor Size20 AWG SINGLE CONDUCTOR
Cross Section Outside Diameter0.063 INCHES NOMINAL IN
Material Document and ClassificationASTM B33 ASSN STD ALL MATERIAL RESPONSES CORE CONDUCTOR SINGLE CONDUCTOR
Material Document and ClassificationMIL-M-20693,TYPE 3,GRADE E MIL SPEC SINGLE MATERIAL RESPONSE SECOND POSITION JACKET SINGLE CONDUCTOR
Voltage Rating600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
MaterialPLASTIC POLYVINYL CHLORIDE (PVC) FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
Strand Awg Size Per Conductor28 SINGLE CONDUCTOR
MaterialCOPPER ALLOY 101 OR COPPER ALLOY 102 CORE CONDUCTOR SINGLE CONDUCTOR
MaterialPLASTIC POLYAMIDE NYLON SECOND POSITION JACKET SINGLE CONDUCTOR
ColorRED FIRST POSITION COVER SINGLE CONDUCTOR
Strand Quantity Per Conductor7 SINGLE CONDUCTOR
Temp Rating-55.0 CELSIUS AND 115.0 CELSIUS DEGC
Cross-Sectional Shape StyleROUND
Conductor FormSTRANDED SINGLE CONDUCTOR
Surface TreatmentTIN CORE CONDUCTOR SINGLE CONDUCTOR
Surface Treatment Document and ClassificationASTM B33-63 ASSN STD SINGLE TREATMENT RESPONSE CORE CONDUCTOR SINGLE CONDUCTOR
Round Conductor Size20 AWG SINGLE CONDUCTOR
Cross Section Outside Diameter0.063 INCHES NOMINAL IN
Material Document and ClassificationASTM B33 ASSN STD ALL MATERIAL RESPONSES CORE CONDUCTOR SINGLE CONDUCTOR
Material Document and ClassificationMIL-M-20693,TYPE 3,GRADE E MIL SPEC SINGLE MATERIAL RESPONSE SECOND POSITION JACKET SINGLE CONDUCTOR
Voltage Rating600.0 MAXIMUM ROOT MEAN SQUARE (RMS) OPERATING VOLTAGE SINGLE CONDUCTOR
MaterialPLASTIC POLYVINYL CHLORIDE (PVC) FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
Strand Awg Size Per Conductor28 SINGLE CONDUCTOR
MaterialCOPPER ALLOY 101 OR COPPER ALLOY 102 CORE CONDUCTOR SINGLE CONDUCTOR
MaterialPLASTIC POLYAMIDE NYLON SECOND POSITION JACKET SINGLE CONDUCTOR
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor6145-00-023-6626
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueFT
SMR CodeZN
Weight0.0010 lbs
Cube0.0001 cu ft
Verified Substitutes 12
Wire,electrical
6145-00-498-8250HP7-B-BLG9 SUCCESSOR
Wire,electrical
National Electrical Mfrs Assn Dba Nema
5895-00-546-5393102202 SUCCESSOR
Amplifier,variable
Aimtron Systems, Llc
Wire,electrical
Wire,electrical
Wire,electrical
6145-01-160-46247033483P5 SUCCESSOR
Wire,electrical
Lockheed Martin Corporation Div Rms
5998-01-476-8674102202 SUCCESSOR
Circuit Card Assembly
Barcoview, Llc Div N/a
5905-00-114-0708 INTERCHANGEABLE
Resistor,fixed,composition
5950-00-488-300113431 INTERCHANGEABLE
Reactor
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
Cross-Reference Index
Part NumberManufacturer
1866-3 Belden, Inc. (USA)
HS5005-20R Raytheon Company Dba Raytheon (USA)
DRA43320-2 Unisys Corporation Dba Unisys Corp (USA)
MIL-DTL-16878/17 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
4980B20J2 L3harris Technologies, Inc. Dba Harris Corporation (USA)
439-8006-000 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
M16878/17BGB2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-W-16878/17 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
10220-2 The Dewey Electronics Corporation Div Pitometer Log Division (USA)
439-8006-000 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
Related Parts
SUCCESSOR 6145-00-023-6626 Wire,electrical
6145-00-498-8250SUCCESSOR
WIRE,ELECTRICAL
HP7-B-BLG9
5895-00-546-5393SUCCESSOR
AMPLIFIER,VARIABLE
102202
6145-00-578-3247SUCCESSOR
WIRE,ELECTRICAL
6145-00-807-5231SUCCESSOR
WIRE,ELECTRICAL
6145-00-834-2676SUCCESSOR
WIRE,ELECTRICAL
6145-01-160-4624SUCCESSOR
WIRE,ELECTRICAL
7033483P5
5998-01-476-8674SUCCESSOR
CIRCUIT CARD ASSEMBLY
102202
5905-00-114-0708INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
5950-00-488-3001INTERCHANGEABLE
REACTOR
13431
4720-00-569-1446INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
6350-00-643-0910INTERCHANGEABLE
BUZZER
15-2G1

Frequently Asked Questions

What is NSN 6145-00-803-0663?

NSN 6145-00-803-0663 is a Wire,electrical, manufactured by Belden, Inc., classified under FSC 6145 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6145-00-803-0663?

NSN 6145-00-803-0663 has 10 cross-referenced part numbers: 1866-3 (Belden, Inc.), HS5005-20R (Raytheon Company Dba Raytheon), DRA43320-2 (Unisys Corporation Dba Unisys Corp), MIL-DTL-16878/17 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 4980B20J2 (L3harris Technologies, Inc. Dba Harris Corporation) and 5 more.

What NSN replaces 6145-00-803-0663?

There are 12 known substitutes for 6145-00-803-0663: 6145-00-023-6626, 6145-00-498-8250, 5895-00-546-5393 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1866-3?

Key specifications for 1866-3: Temp Rating: -55.0 CELSIUS AND 115.0 CELSIUS DEGC; Cross-Sectional Shape Style: ROUND; Conductor Form: STRANDED SINGLE CONDUCTOR; Surface Treatment: TIN CORE CONDUCTOR SINGLE CONDUCTOR. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6145-00-803-0663 still in active supply?

NSN 6145-00-803-0663 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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