PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5-1257Transformer,power Autotransforme

Superior Electric Holding Group Llc Div Specialty Product Technologies · NSN 5950-00-690-0365 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-690-0365 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-690-0365. Primary manufacturer part number: 5-1257.
Features
  • Transformer,power Autotransforme — FSC 5950
  • Body Length: 3.312 INCHES NOMINAL IN
  • Reliability Indicator: NOT ESTABLISHED
  • Nominal Thread Size: 0.375 INCHES SINGLE GROUP IN
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Inclosure Type: FULLY INCLOSED
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Terminal Type and Quantity: 3 THREADED STUD
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power Autotransforme, cataloged under National Stock Number 5950-00-690-0365, 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 Superior Electric Holding Group Llc Div Specialty Product Technologies. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5950-00-690-0365
Primary Part Number5-1257
Item NameTransformer,power Autotransforme
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerSuperior Electric Holding Group Llc Div Specialty Product Technologies
StatusCANCELLED
Body Length3.312 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.375 INCHES SINGLE GROUP IN
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Inclosure TypeFULLY INCLOSED
Thread Quantity Per Inch32 SINGLE GROUP
Terminal Type and Quantity3 THREADED STUD
Winding Function and Quantity1 PRIMARY, VARIABLE AUTOTRANSFORMER TYPE SINGLE COMPONENT
Winding Operating Current2.5 AMPERES AC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
Winding Power Rating70.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE PRIMARY OUTPUT
Frequency Rating400.0 HERTZ MINIMUM AND 800.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Voltage0.00 AC VOLTS MINIMUM AND 28.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
Mounting MethodTHREADED BUSHING SINGLE GROUP
Body Outside Diameter1.812 INCHES NOMINAL IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
Thread Series DesignatorUNEF SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
4730-00-047-947751257 INTERCHANGEABLE
Clamp,hose
Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution
5962-00-455-0839911411-10 INTERCHANGEABLE
Microcircuit,linear
Bae Systems Information and Electronic Systems Integration Inc.
5950-00-903-28632-1257 INTERCHANGEABLE
Transformer,power
Superior Electric Holding Group Llc Div Specialty Product Technologies
2520-01-396-5008203-10290 INTERCHANGEABLE
Torque Converter,vehicular
Sachs-Boge of America
Cross-Reference Index
Part NumberManufacturer
5-1257 PRIMARY Superior Electric Holding Group Llc Div Specialty Product Technologies (USA)
Related Parts
4730-00-047-9477INTERCHANGEABLE
CLAMP,HOSE
51257
5962-00-455-0839INTERCHANGEABLE
MICROCIRCUIT,LINEAR
911411-10
5950-00-903-2863INTERCHANGEABLE
TRANSFORMER,POWER
2-1257
2520-01-396-5008INTERCHANGEABLE
TORQUE CONVERTER,VEHICULAR
203-10290

Frequently Asked Questions

What is NSN 5950-00-690-0365?

NSN 5950-00-690-0365 is a Transformer,power Autotransforme, manufactured by Superior Electric Holding Group Llc Div Specialty Product Technologies, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-690-0365?

NSN 5950-00-690-0365 has 1 cross-referenced part number: 5-1257 (Superior Electric Holding Group Llc Div Specialty Product Technologies).

What NSN replaces 5950-00-690-0365?

There are 4 known substitutes for 5950-00-690-0365: 4730-00-047-9477, 5962-00-455-0839, 5950-00-903-2863 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5-1257?

Key specifications for 5-1257: Body Length: 3.312 INCHES NOMINAL IN; Reliability Indicator: NOT ESTABLISHED; Nominal Thread Size: 0.375 INCHES SINGLE GROUP IN; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-690-0365 still in active supply?

NSN 5950-00-690-0365 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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