PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2938686-1Transformer,power Autotransforme

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-01-120-9187 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-120-9187 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-120-9187. Primary manufacturer part number: 2938686-1.
Features
  • Transformer,power Autotransforme — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Winding Function and Quantity: 1 PRIMARY, FIXED AUTOTRANSFORMER TYPE SINGLE COMPONENT
  • Winding Operating Voltage: 70.00 AC VOLTS NOMINAL AND 74.00 AC VOLTS NOMINAL AND 78.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY OUTPUT
  • Mounting Method: BRACKET(S) AND THREADED HOLE(S) SINGLE GROUP
  • Input-Output Phase Relationship: THREE PHASE TO THREE PHASE SINGLE COMPONENT
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 4.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Transformer Winding Connection Type: WYE-WYE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power Autotransforme, cataloged under National Stock Number 5950-01-120-9187, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-01-120-9187
Primary Part Number2938686-1
Item NameTransformer,power Autotransforme
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Winding Function and Quantity1 PRIMARY, FIXED AUTOTRANSFORMER TYPE SINGLE COMPONENT
Winding Operating Voltage70.00 AC VOLTS NOMINAL AND 74.00 AC VOLTS NOMINAL AND 78.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY OUTPUT
Mounting MethodBRACKET(S) AND THREADED HOLE(S) SINGLE GROUP
Input-Output Phase RelationshipTHREE PHASE TO THREE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width4.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Transformer Winding Connection TypeWYE-WYE
Body Width5.750 INCHES MAXIMUM IN
Body Height3.000 INCHES MAXIMUM IN
Center to Center Distance Between Mounting Facilities Parallel to Length5.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Operating Current500.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY INPUT
Body Length8.000 INCHES MAXIMUM IN
Thread Series DesignatorUNF SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Nominal Thread Size0.190 INCHES SINGLE GROUP IN
Thread Quantity Per Inch32 SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Terminal Type and Quantity13 TAB, SOLDER LUG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
1005-00-034-80178715552 INTERCHANGEABLE
Swivel,wire Rope,assembly
Army, United States Department of the Dba Rock Island Arsenal Jmtc
3110-00-100-0534 INTERCHANGEABLE
Cup,tapered Roller Bearing
5330-00-290-8424 INTERCHANGEABLE
Gasket
2915-00-627-424140567 INTERCHANGEABLE
Parts Kit,valve,ove
Meggitt North Hollywood Inc
2910-01-007-0993 INTERCHANGEABLE
Governor,gasoline Engine
6680-01-081-778840567 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
Cross-Reference Index
Part NumberManufacturer
PEI 7818 Precision Electronics, Inc (USA)
A10667 Autodyne Manufacturing Co Inc (USA)
2938686-1 Coast/advanced Chip Magnetics, Inc. (USA)
WE2331 Wems Electronics Transformer Group (USA)
40567 Coast/advanced Chip Magnetics, Inc. (USA)
WE2331 Magnetika Inc (USA)
L15347 Electronic Transformer Corp Div Electronic Transformer Corporation (USA)
2938686-1 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
1005-00-034-8017INTERCHANGEABLE
SWIVEL,WIRE ROPE,ASSEMBLY
8715552
3110-00-100-0534INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
5330-00-290-8424INTERCHANGEABLE
GASKET
2915-00-627-4241INTERCHANGEABLE
PARTS KIT,VALVE,OVE
40567
2910-01-007-0993INTERCHANGEABLE
GOVERNOR,GASOLINE ENGINE
6680-01-081-7788INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
40567

Frequently Asked Questions

What is NSN 5950-01-120-9187?

NSN 5950-01-120-9187 is a Transformer,power Autotransforme, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-120-9187?

NSN 5950-01-120-9187 has 8 cross-referenced part numbers: PEI 7818 (Precision Electronics, Inc), A10667 (Autodyne Manufacturing Co Inc), 2938686-1 (Coast/advanced Chip Magnetics, Inc.), WE2331 (Wems Electronics Transformer Group), 40567 (Coast/advanced Chip Magnetics, Inc.) and 3 more.

What NSN replaces 5950-01-120-9187?

There are 6 known substitutes for 5950-01-120-9187: 1005-00-034-8017, 3110-00-100-0534, 5330-00-290-8424 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2938686-1?

Key specifications for 2938686-1: Reliability Indicator: NOT ESTABLISHED; Winding Function and Quantity: 1 PRIMARY, FIXED AUTOTRANSFORMER TYPE SINGLE COMPONENT; Winding Operating Voltage: 70.00 AC VOLTS NOMINAL AND 74.00 AC VOLTS NOMINAL AND 78.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY OUTPUT; Mounting Method: BRACKET(S) AND THREADED HOLE(S) SINGLE GROUP. 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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