PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2666731-1Transformer,power Autotransforme

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-00-426-3647 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-426-3647 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-426-3647. Primary manufacturer part number: 2666731-1.
Features
  • Transformer,power Autotransforme — FSC 5950
  • Thread Series Designator: UNEF SINGLE GROUP
  • Nominal Thread Size: 0.375 INCHES SINGLE GROUP IN
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Terminal Type and Quantity: 3 TAB, SOLDER LUG
  • Mounting Method: THREADED BUSHING SINGLE GROUP
  • Winding Operating Voltage: 0.00 AC VOLTS MINIMUM AND 132.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
  • Body Length: 2.313 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power Autotransforme, cataloged under National Stock Number 5950-00-426-3647, 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 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-426-3647
Primary Part Number2666731-1
Item NameTransformer,power Autotransforme
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Thread Series DesignatorUNEF SINGLE GROUP
Nominal Thread Size0.375 INCHES SINGLE GROUP IN
Thread Quantity Per Inch32 SINGLE GROUP
Terminal Type and Quantity3 TAB, SOLDER LUG
Mounting MethodTHREADED BUSHING SINGLE GROUP
Winding Operating Voltage0.00 AC VOLTS MINIMUM AND 132.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
Body Length2.313 INCHES NOMINAL IN
Winding Operating Voltage120.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Winding Function and Quantity1 PRIMARY, VARIABLE AUTOTRANSFORMER TYPE SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Body Outside Diameter2.813 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-226-3494 INTERCHANGEABLE
Bearing,ball,annular
Cross-Reference Index
Part NumberManufacturer
2666731-1 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
144399 Northrop Grumman Systems Corporation (USA)
10B1214 Superior Electric Holding Group Llc Div Specialty Product Technologies (USA)
Related Parts
3110-00-226-3494INTERCHANGEABLE
BEARING,BALL,ANNULAR

Frequently Asked Questions

What is NSN 5950-00-426-3647?

NSN 5950-00-426-3647 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 5950-00-426-3647?

NSN 5950-00-426-3647 has 3 cross-referenced part numbers: 2666731-1 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 144399 (Northrop Grumman Systems Corporation), 10B1214 (Superior Electric Holding Group Llc Div Specialty Product Technologies).

What NSN replaces 5950-00-426-3647?

There is 1 known substitute for 5950-00-426-3647: 3110-00-226-3494. Verify interchangeability with system specifications before substitution.

What are the specifications of 2666731-1?

Key specifications for 2666731-1: Thread Series Designator: UNEF SINGLE GROUP; Nominal Thread Size: 0.375 INCHES SINGLE GROUP IN; Thread Quantity Per Inch: 32 SINGLE GROUP; Terminal Type and Quantity: 3 TAB, SOLDER LUG. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com