PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66101-1Contact,electrical

Te Connectivity Corporation · NSN 5999-00-478-4403 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-478-4403 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-478-4403. Primary manufacturer part number: 66101-1.
Features
  • Contact,electrical — FSC 5999
  • Voltage Rating in Volts: 1000.0 AC
  • Pin Accommodation Diameter: 0.066 INCHES NOMINAL IN
  • Terminal Type and Quantity: 1 CRIMP AXIALLY AT EACH END
  • Surface Treatment: GOLD AND NICKEL CONTACT
  • Mounting Method: FORCE FIT
  • Criticality Code Justification: FEAT
  • Material: COPPER ALLOY BODY AND CONTACT
Applications
  • Applications requiring Copper Alloy Body and Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-478-4403, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Te Connectivity Corporation. Government technical data includes 25 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-478-4403
Primary Part Number66101-1
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerTe Connectivity Corporation
StatusCANCELLED
Voltage Rating in Volts1000.0 AC
Pin Accommodation Diameter0.066 INCHES NOMINAL IN
Terminal Type and Quantity1 CRIMP AXIALLY AT EACH END
Surface TreatmentGOLD AND NICKEL CONTACT
Mounting MethodFORCE FIT
Criticality Code JustificationFEAT
MaterialCOPPER ALLOY BODY AND CONTACT
Surface Treatment Document and ClassificationMIL-G-45204 MIL SPEC SINGLE TREATMENT RESPONSE BODY AND CONTACT
Precious Material and Weight0.005 GOLD GRAINS, TROY
Style DesignatorCRIMP TYPE CONTACT
Surface TreatmentGOLD AND NICKEL BODY
Overall Diameter0.113 INCHES NOMINAL IN
Current Rating in Amps13.0
Precious Material and LocationBODY AND CONTACT SURFACES GOLD
Precious MaterialGOLD
Voltage Rating in Volts1000.0 AC
Pin Accommodation Diameter0.066 INCHES NOMINAL IN
Terminal Type and Quantity1 CRIMP AXIALLY AT EACH END
Surface TreatmentGOLD AND NICKEL CONTACT
Mounting MethodFORCE FIT
Criticality Code JustificationFEAT
MaterialCOPPER ALLOY BODY AND CONTACT
Surface Treatment Document and ClassificationMIL-G-45204 MIL SPEC SINGLE TREATMENT RESPONSE BODY AND CONTACT
Precious Material and Weight0.005 GOLD GRAINS, TROY
Style DesignatorCRIMP TYPE CONTACT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeZN
Weight0.0100 lbs
Cube0.0027 cu ft
Verified Substitutes 4
5999-00-918-4046276-2142P4 INTERCHANGEABLE
Contact,electrical
Raytheon Company Dba Raytheon Co
5962-01-088-986542993-1 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
5950-01-303-07296610-11 INTERCHANGEABLE
Coil,radio Frequency
Caddell Burns Manufacturing Co Inc
5985-01-532-40222225NW INTERCHANGEABLE
Antenna Assembly
Pctel Antenna Products Group Inc
Cross-Reference Index
Part NumberManufacturer
131-1622-00 Tektronix, Inc. (USA)
105000544-1 Northrop Grumman Systems Corporation (USA)
42993-1 Te Connectivity Corporation (USA)
2051800-0701 Raytheon Company Dba Raytheon Co (USA)
66100-6 Te Connectivity Corporation (USA)
66100-1(LP) Te Connectivity Corporation (USA)
ES7749-02S Drs Sustainment Systems, Inc. (USA)
19B209171P14 General Electric Co Mobile Communications Business Div (USA)
66101-1 PRIMARY Te Connectivity Corporation (USA)
Related Parts
5999-00-918-4046INTERCHANGEABLE
CONTACT,ELECTRICAL
276-2142P4
5962-01-088-9865INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
42993-1
5950-01-303-0729INTERCHANGEABLE
COIL,RADIO FREQUENCY
6610-11
5985-01-532-4022INTERCHANGEABLE
ANTENNA ASSEMBLY
2225NW

Frequently Asked Questions

What is NSN 5999-00-478-4403?

NSN 5999-00-478-4403 is a Contact,electrical, manufactured by Te Connectivity Corporation, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-478-4403?

NSN 5999-00-478-4403 has 9 cross-referenced part numbers: 131-1622-00 (Tektronix, Inc.), 105000544-1 (Northrop Grumman Systems Corporation), 42993-1 (Te Connectivity Corporation), 2051800-0701 (Raytheon Company Dba Raytheon Co), 66100-6 (Te Connectivity Corporation) and 4 more.

What NSN replaces 5999-00-478-4403?

There are 4 known substitutes for 5999-00-478-4403: 5999-00-918-4046, 5962-01-088-9865, 5950-01-303-0729 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66101-1?

Key specifications for 66101-1: Voltage Rating in Volts: 1000.0 AC; Special Features: WEAPON SYSTEM ESSENTIAL; Pin Accommodation Diameter: 0.066 INCHES NOMINAL IN; Terminal Type and Quantity: 1 CRIMP AXIALLY AT EACH END. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-478-4403 still in active supply?

NSN 5999-00-478-4403 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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