PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

249829Transformer,power

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-00-646-5257 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-646-5257 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-646-5257. Primary manufacturer part number: 249829.
Features
  • Transformer,power — FSC 5950
  • Body Length: 7.750 INCHES NOMINAL IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Operating Voltage: 6.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Frequency Rating: 60.0 HERTZ NOMINAL SINGLE COMPONENT
  • Mounting Facility Quantity: 4 SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-646-5257, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-646-5257
Primary Part Number249829
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Body Length7.750 INCHES NOMINAL IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Voltage6.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Mounting Bolt Circle Diameter4.735 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current8.34 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Terminal Type and Quantity4 THREADED STUD
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Body Outside Diameter10.500 INCHES NOMINAL IN
Inclosure TypeFULLY INCLOSED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5940-00-082-4861 INTERCHANGEABLE
Terminal,stud
5950-00-645-5257PEI 4707 INTERCHANGEABLE
Reactor
Precision Electronics, Inc
5940-00-853-623210-209-2-01 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
2990-01-061-0897521232 INTERCHANGEABLE
Starter Rope,engine
Brunswick Corp Us Marine Div
Cross-Reference Index
Part NumberManufacturer
15582 Basler Electric Co (USA)
15582 Autodyne Manufacturing Co Inc (USA)
249829 United Technologies Automotive Inc Components Div (USA)
249829 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
249829 Precision Electronics, Inc (USA)
Related Parts
5940-00-082-4861INTERCHANGEABLE
TERMINAL,STUD
5950-00-645-5257INTERCHANGEABLE
REACTOR
PEI 4707
5940-00-853-6232INTERCHANGEABLE
TERMINAL,STUD
10-209-2-01
2990-01-061-0897INTERCHANGEABLE
STARTER ROPE,ENGINE
521232

Frequently Asked Questions

What is NSN 5950-00-646-5257?

NSN 5950-00-646-5257 is a Transformer,power, 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 5950-00-646-5257?

NSN 5950-00-646-5257 has 5 cross-referenced part numbers: 15582 (Basler Electric Co), 15582 (Autodyne Manufacturing Co Inc), 249829 (United Technologies Automotive Inc Components Div), 249829 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 249829 (Precision Electronics, Inc).

What NSN replaces 5950-00-646-5257?

There are 4 known substitutes for 5950-00-646-5257: 5940-00-082-4861, 5950-00-645-5257, 5940-00-853-6232 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 249829?

Key specifications for 249829: Body Length: 7.750 INCHES NOMINAL IN; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY; Winding Operating Voltage: 6.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY. 14 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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