PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

GS55251Handset

American Telephone and Telegraph Co · NSN 5965-00-669-9145 · FSC 5965 · No Item Name Available
Verified by PartsTable
NSN 5965-00-669-9145 — this item is cataloged by the U.S. Government under National Stock Number 5965-00-669-9145. Primary manufacturer part number: GS55251.
Features
  • Handset — FSC 5965
  • Impedance Rating: 40.0 OHMS NOMINAL
  • Operating Current Rating: 125.0 MILLIAMPERES NOMINAL
  • Microphone Element Type: CARBON
  • Individual Connector Termination Type: LUG
  • Earphone Element Type: MAGNETIC
  • Earphone Impedance Rating: 150.0 OHMS NOMINAL
  • Conductor Quantity: 7
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Handset, cataloged under National Stock Number 5965-00-669-9145, is classified within Federal Supply Class 5965 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is American Telephone and Telegraph Co. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 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.

Technical Specifications
ParameterValue
NSN5965-00-669-9145
Primary Part NumberGS55251
Item NameHandset
FSC / FSG5965 / 59 — No Item Name Available
ManufacturerAmerican Telephone and Telegraph Co
StatusCANCELLED
Impedance Rating40.0 OHMS NOMINAL
Operating Current Rating125.0 MILLIAMPERES NOMINAL
Microphone Element TypeCARBON
Individual Connector Termination TypeLUG
Earphone Element TypeMAGNETIC
Earphone Impedance Rating150.0 OHMS NOMINAL
Conductor Quantity7
Nondefinitive Spec/std DataH-60/PT TYPE
Criticality Code JustificationFEAT
Power SourceBATTERY
Test Data Document81349-MIL-H-11996 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.).
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5965-00-543-1837 INTERCHANGEABLE
Handset
5965-00-549-0220 INTERCHANGEABLE
Earphone Element
5965-00-892-3850 INTERCHANGEABLE
Handset
5965-00-925-5112 INTERCHANGEABLE
Microphone Element
Cross-Reference Index
Part NumberManufacturer
GS55251 American Telephone and Telegraph Co (USA)
H-60/PT Star Dynamic Corporation Dba Star Dynamic Corp (USA)
H-60/PT Joint Electronics Type Designation System (USA)
MIL-DTL-11996/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
H-60/PT Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
H-60()/PT Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
DLSMD207906 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
MIL-H-11996 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
SM-D-207907 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
H-60/PT Yankee Telecommunication Laboratories Inc (USA)
Related Parts
5965-00-543-1837INTERCHANGEABLE
HANDSET
5965-00-549-0220INTERCHANGEABLE
EARPHONE ELEMENT
5965-00-892-3850INTERCHANGEABLE
HANDSET
5965-00-925-5112INTERCHANGEABLE
MICROPHONE ELEMENT

Frequently Asked Questions

What is NSN 5965-00-669-9145?

NSN 5965-00-669-9145 is a Handset, manufactured by American Telephone and Telegraph Co, classified under FSC 5965 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5965-00-669-9145?

NSN 5965-00-669-9145 has 10 cross-referenced part numbers: GS55251 (American Telephone and Telegraph Co), H-60/PT (Star Dynamic Corporation Dba Star Dynamic Corp), H-60/PT (Joint Electronics Type Designation System), MIL-DTL-11996/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), H-60/PT (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 5 more.

What NSN replaces 5965-00-669-9145?

There are 4 known substitutes for 5965-00-669-9145: 5965-00-543-1837, 5965-00-549-0220, 5965-00-892-3850 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of GS55251?

Key specifications for GS55251: Impedance Rating: 40.0 OHMS NOMINAL; Operating Current Rating: 125.0 MILLIAMPERES NOMINAL; Microphone Element Type: CARBON; Individual Connector Termination Type: LUG. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5965-00-669-9145 still in active supply?

NSN 5965-00-669-9145 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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