PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-C-55302/171Contact,electrical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5999-01-365-5048 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-365-5048 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-365-5048. Primary manufacturer part number: MIL-C-55302/171.
Features
  • Contact,electrical — FSC 5999
  • Style Designator: SOCKET CONTACT
  • Specification/standard Data: 81349-MIL-C-55302/171 GOVERNMENT SPECIFICATION
  • Overall Diameter: 0.067 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
  • Terminal Type and Quantity: 1 CLIP END OPPOSITE CONTACT
  • Surface Treatment Document and Classification: MIL-P-81728 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-14550 MIL SPEC 2ND TREATMENT RESPONSE BODY AND CONTACT
  • Mounting Method: TERMINAL
  • Test Data Document: 81349-MIL-C-55302 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Applications
  • Applications requiring Copper Alloy Body and Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-01-365-5048, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-365-5048
Primary Part NumberMIL-C-55302/171
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Style DesignatorSOCKET CONTACT
Specification/standard Data81349-MIL-C-55302/171 GOVERNMENT SPECIFICATION
Overall Diameter0.067 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
Terminal Type and Quantity1 CLIP END OPPOSITE CONTACT
Surface Treatment Document and ClassificationMIL-P-81728 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-14550 MIL SPEC 2ND TREATMENT RESPONSE BODY AND CONTACT
Mounting MethodTERMINAL
Test Data Document81349-MIL-C-55302 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MaterialCOPPER ALLOY BODY AND CONTACT
Surface TreatmentTIN BODY AND CONTACT
Style DesignatorSOCKET CONTACT
Specification/standard Data81349-MIL-C-55302/171 GOVERNMENT SPECIFICATION
Overall Diameter0.067 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN
Terminal Type and Quantity1 CLIP END OPPOSITE CONTACT
Surface Treatment Document and ClassificationMIL-P-81728 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-C-14550 MIL SPEC 2ND TREATMENT RESPONSE BODY AND CONTACT
Mounting MethodTERMINAL
Test Data Document81349-MIL-C-55302 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MaterialCOPPER ALLOY BODY AND CONTACT
Surface TreatmentTIN BODY AND CONTACT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJN
Verified Substitutes 1
5999-01-356-1430 INTERCHANGEABLE
Contact,electrical
Cross-Reference Index
Part NumberManufacturer
MIL-C-55302/171 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M55302/171-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-DTL-55302/171 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5999-01-356-1430INTERCHANGEABLE
CONTACT,ELECTRICAL

Frequently Asked Questions

What is NSN 5999-01-365-5048?

NSN 5999-01-365-5048 is a Contact,electrical, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-365-5048?

NSN 5999-01-365-5048 has 3 cross-referenced part numbers: MIL-C-55302/171 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M55302/171-1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-DTL-55302/171 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5999-01-365-5048?

There is 1 known substitute for 5999-01-365-5048: 5999-01-356-1430. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-C-55302/171?

Key specifications for MIL-C-55302/171: Overall Length: 0.536 INCHES MAXIMUM IN; Style Designator: SOCKET CONTACT; Specification/standard Data: 81349-MIL-C-55302/171 GOVERNMENT SPECIFICATION; Overall Diameter: 0.067 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN. 20 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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