PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66555-3Contact,electrical

Te Connectivity Corporation · NSN 5999-01-081-6961 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-081-6961 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-081-6961. Primary manufacturer part number: 66555-3.
Features
  • Contact,electrical — FSC 5999
  • Style Designator: SOCKET CONTACT
  • Material Document and Classification: QQ-B-750 FED SPEC SINGLE MATERIAL RESPONSE BODY AND CONTACT
  • Precious Material: GOLD
  • Surface Treatment Document and Classification: MIL-G-45204 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-N-290 FED SPEC 2ND TREATMENT RESPONSE BODY AND CONTACT
  • Precious Material and Weight: 0.005 GOLD GRAINS, TROY
  • Terminal Type and Quantity: 1 CRIMP END OPPOSITE CONTACT
  • 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 5999-01-081-6961, 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 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-081-6961
Primary Part Number66555-3
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerTe Connectivity Corporation
StatusCANCELLED
Style DesignatorSOCKET CONTACT
Material Document and ClassificationQQ-B-750 FED SPEC SINGLE MATERIAL RESPONSE BODY AND CONTACT
Precious MaterialGOLD
Surface Treatment Document and ClassificationMIL-G-45204 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-N-290 FED SPEC 2ND TREATMENT RESPONSE BODY AND CONTACT
Precious Material and Weight0.005 GOLD GRAINS, TROY
Terminal Type and Quantity1 CRIMP END OPPOSITE CONTACT
MaterialCOPPER ALLOY BODY AND CONTACT
Surface TreatmentGOLD AND NICKEL BODY AND CONTACT
Cable Entrance Diameter0.020 INCHES NOMINAL IN
Current Rating in Amps3.0
Crimping Tool Identifying Number90309-1
Mounting MethodFORCE FIT
Slot Accommodation Width0.065 INCHES NOMINAL IN
Precious Material and LocationBODY AND CONTACT SURFACES GOLD
Current Rating in Amps3.0
Style DesignatorSOCKET CONTACT
Material Document and ClassificationQQ-B-750 FED SPEC SINGLE MATERIAL RESPONSE BODY AND CONTACT
Precious MaterialGOLD
Surface Treatment Document and ClassificationMIL-G-45204 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-N-290 FED SPEC 2ND TREATMENT RESPONSE BODY AND CONTACT
Precious Material and Weight0.005 GOLD GRAINS, TROY
Terminal Type and Quantity1 CRIMP END OPPOSITE CONTACT
MaterialCOPPER ALLOY BODY AND CONTACT
Surface TreatmentGOLD AND NICKEL BODY AND CONTACT
Cable Entrance Diameter0.020 INCHES NOMINAL IN
Crimping Tool Identifying Number90309-1
Mounting MethodFORCE FIT
Slot Accommodation Width0.065 INCHES NOMINAL IN
Precious Material and LocationBODY AND CONTACT SURFACES GOLD
Lifecycle & Compliance
Acquisition StatusCANCELLED
Successor5999-00-904-1733 (DMS 87062B)
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeVN
Weight0.0200 lbs
Cube0.0002 cu ft
Verified Substitutes 7
No Item Name Available
5999-00-904-1733DMS 87062B SUCCESSOR
Contact,electrical
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
5999-00-990-9083DMS 87062B SUCCESSOR
Contact,electrical
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
5935-00-390-9329204735-1 INTERCHANGEABLE
Connector Body,receptacle,electr
Te Connectivity Corporation
5999-01-007-6669 INTERCHANGEABLE
Contact,electrical
5999-01-063-4561 INTERCHANGEABLE
Contact,electrical
5999-01-064-1139 INTERCHANGEABLE
Contact,electrical
Cross-Reference Index
Part NumberManufacturer
6405878-1 Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div (USA)
DMS 87062B Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
66555-3 PRIMARY Te Connectivity Corporation (USA)
ES7745-01 Drs Sustainment Systems, Inc. (USA)
66555-2 Te Connectivity Corporation (USA)
ES7745-03 Drs Sustainment Systems, Inc. (USA)
66555-4 Te Connectivity Corporation (USA)
Related Parts
SUCCESSOR 5999-00-904-1733 Contact,electrical · DMS 87062B
5999-01-217-0041SUCCESSOR
NO ITEM NAME AVAILABLE
5999-00-990-9083SUCCESSOR
CONTACT,ELECTRICAL
DMS 87062B
5935-00-390-9329INTERCHANGEABLE
CONNECTOR BODY,RECEPTACLE,ELECTR
204735-1
5999-01-007-6669INTERCHANGEABLE
CONTACT,ELECTRICAL
5999-01-063-4561INTERCHANGEABLE
CONTACT,ELECTRICAL
5999-01-064-1139INTERCHANGEABLE
CONTACT,ELECTRICAL

Frequently Asked Questions

What is NSN 5999-01-081-6961?

NSN 5999-01-081-6961 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 5999-01-081-6961?

NSN 5999-01-081-6961 has 7 cross-referenced part numbers: 6405878-1 (Honeywell Intl Inc Defense Avionics Systems Former Test Systems Div), DMS 87062B (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)), 66555-3 (Te Connectivity Corporation), ES7745-01 (Drs Sustainment Systems, Inc.), 66555-2 (Te Connectivity Corporation) and 2 more.

What NSN replaces 5999-01-081-6961?

There are 7 known substitutes for 5999-01-081-6961: 5999-01-217-0041, 5999-00-904-1733, 5999-00-990-9083 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66555-3?

Key specifications for 66555-3: Style Designator: SOCKET CONTACT; Material Document and Classification: QQ-B-750 FED SPEC SINGLE MATERIAL RESPONSE BODY AND CONTACT; Precious Material: GOLD; Surface Treatment Document and Classification: MIL-G-45204 MIL SPEC 1ST TREATMENT RESPONSE AND QQ-N-290 FED SPEC 2ND TREATMENT RESPONSE BODY AND CONTACT. 28 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-01-081-6961 still in active supply?

NSN 5999-01-081-6961 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.
PartsTable Design LLC · partstable.com