PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55-1373740-1Transformer,audio Frequency

General Dynamics Mission Systems, Inc. · NSN 5950-01-239-7839 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-239-7839 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-239-7839. Primary manufacturer part number: 55-1373740-1.
Features
  • Transformer,audio Frequency — FSC 5950
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Impedance Rating in Ohms: 78500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
  • Primary to Secondary Turn Ratio: 1 TO 51 SINGLE COMPONENT
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Frequency Rating: 1.0 HERTZ MINIMUM AND 8.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Body Height: 2.500 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-239-7839, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is General Dynamics Mission Systems, Inc.. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-239-7839
Primary Part Number55-1373740-1
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerGeneral Dynamics Mission Systems, Inc.
StatusACTIVE
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Impedance Rating in Ohms78500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY
Primary to Secondary Turn Ratio1 TO 51 SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Mounting Facility Quantity2 SINGLE GROUP
Frequency Rating1.0 HERTZ MINIMUM AND 8.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Body Height2.500 INCHES NOMINAL IN
Body Length1.750 INCHES NOMINAL IN
Body Width1.440 INCHES NOMINAL IN
Inclosure TypeFULLY INCLOSED
Terminal Type and Quantity14 TURRET
Distance Between Mounting Facility Centers1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Function and Quantity2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Impedance Rating in Ohms60.0 NOMINAL SINGLE COMPONENT ALL PRIMARY
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-071-9497G4 INTERCHANGEABLE
Gasket
Norwalk Compreseer Company Inc Dba Norwalk Compressor Company
4730-00-102-8389G-4 INTERCHANGEABLE
Clamp,hose
U.s.i.c. Corporation Dba Hercules Hose Clamps
3419-00-223-6367 INTERCHANGEABLE
Grinding Machine,belt,vertical a
5365-00-293-797132158-31 INTERCHANGEABLE
Bushing,machine Thread
Solventum Purification Inc. Div Filtration and Separation Division
5340-00-429-2556 INTERCHANGEABLE
Hardware Kit,mechanic Equipment
2940-00-447-1154G4 INTERCHANGEABLE
Filter Element,oil
Kaydon Custom Filtration Corporation
6610-00-456-2364208020-109 INTERCHANGEABLE
Indicator Mechanism
Jewell Instruments Llc
5330-00-517-0159 INTERCHANGEABLE
Ring,wiper
5975-00-727-515388-20018-2 INTERCHANGEABLE
Strap,tie Down,electrical Compon
Department of Defense Project Manager-Mobile Electric Power
5961-00-911-3465 INTERCHANGEABLE
Semiconductor Device,diode
Cross-Reference Index
Part NumberManufacturer
GE0-4 Thordarson Inc (USA)
55-1373740-1 PRIMARY General Dynamics Mission Systems, Inc. (USA)
G4 Magnetek Inc Huntington Div (USA)
Related Parts
5330-00-071-9497INTERCHANGEABLE
GASKET
G4
4730-00-102-8389INTERCHANGEABLE
CLAMP,HOSE
G-4
3419-00-223-6367INTERCHANGEABLE
GRINDING MACHINE,BELT,VERTICAL A
5365-00-293-7971INTERCHANGEABLE
BUSHING,MACHINE THREAD
32158-31
5340-00-429-2556INTERCHANGEABLE
HARDWARE KIT,MECHANIC EQUIPMENT
2940-00-447-1154INTERCHANGEABLE
FILTER ELEMENT,OIL
G4
6610-00-456-2364INTERCHANGEABLE
INDICATOR MECHANISM
208020-109
5330-00-517-0159INTERCHANGEABLE
RING,WIPER
5975-00-727-5153INTERCHANGEABLE
STRAP,TIE DOWN,ELECTRICAL COMPON
88-20018-2
5961-00-911-3465INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5930-01-326-0581INTERCHANGEABLE
SWITCH,ROTARY
6130-01-632-9652INTERCHANGEABLE
CHARGER,BATTERY
G4

Frequently Asked Questions

What is NSN 5950-01-239-7839?

NSN 5950-01-239-7839 is a Transformer,audio Frequency, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-239-7839?

NSN 5950-01-239-7839 has 3 cross-referenced part numbers: GE0-4 (Thordarson Inc), 55-1373740-1 (General Dynamics Mission Systems, Inc.), G4 (Magnetek Inc Huntington Div).

What NSN replaces 5950-01-239-7839?

There are 12 known substitutes for 5950-01-239-7839: 5330-00-071-9497, 4730-00-102-8389, 3419-00-223-6367 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55-1373740-1?

Key specifications for 55-1373740-1: Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN; Impedance Rating in Ohms: 78500.0 NOMINAL SINGLE COMPONENT ALL SECONDARY; Primary to Secondary Turn Ratio: 1 TO 51 SINGLE COMPONENT; Reliability Indicator: NOT ESTABLISHED. 16 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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