PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1233289Transformer,power Autotransforme

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-00-556-9138 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-556-9138 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-556-9138. Primary manufacturer part number: 1233289.
Features
  • Transformer,power Autotransforme — FSC 5950
  • Inclosure Type: HERMETICALLY SEALED
  • Winding Operating Voltage: 5.85 AC VOLTS NOMINAL AND 12.00 AC VOLTS NOMINAL AND 17.55 AC VOLTS NOMINAL AND 23.40 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY OUTPUT
  • Body Width: 1.375 INCHES NOMINAL IN
  • Winding Operating Voltage: 24.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
  • Winding Operating Current: 41.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.156 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Reliability Indicator: NOT ESTABLISHED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power Autotransforme, cataloged under National Stock Number 5950-00-556-9138, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-556-9138
Primary Part Number1233289
Item NameTransformer,power Autotransforme
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Inclosure TypeHERMETICALLY SEALED
Winding Operating Voltage5.85 AC VOLTS NOMINAL AND 12.00 AC VOLTS NOMINAL AND 17.55 AC VOLTS NOMINAL AND 23.40 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY OUTPUT
Body Width1.375 INCHES NOMINAL IN
Winding Operating Voltage24.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
Winding Operating Current41.0 MILLIAMPERES AC NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
Center to Center Distance Between Mounting Facilities Parallel to Length1.156 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Reliability IndicatorNOT ESTABLISHED
Winding Function and Quantity1 PRIMARY, FIXED AUTOTRANSFORMER TYPE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width1.031 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting Facility Quantity2 SINGLE GROUP
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Terminal Type and Quantity7 WIRE HOOK
Body Length1.516 INCHES NOMINAL IN
Body Height1.500 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Nominal Thread Size0.112 INCHES SINGLE GROUP IN
Frequency Rating400.0 HERTZ MAXIMUM SINGLE COMPONENT
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5120-00-243-7345 INTERCHANGEABLE
Socket,socket Wrench
3020-00-287-674840826 INTERCHANGEABLE
Gear,spur
L3harris Technologies, Inc Div Space & Airborne Systems
3120-01-018-7290388793 INTERCHANGEABLE
Bushing,sleeve
Curtiss-Wright Electro-Mechanical Corporation Div Epd
5925-01-447-722040826 INTERCHANGEABLE
Circuit Breaker
Briskheat Corporation Dba Briskheat Corp
3120-01-479-809140826 INTERCHANGEABLE
Bearing,sleeve
Allied Systems Company Dba Allied Systems Co
Cross-Reference Index
Part NumberManufacturer
1233289 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
40826 Freed Transformer Co (USA)
Related Parts
5120-00-243-7345INTERCHANGEABLE
SOCKET,SOCKET WRENCH
3020-00-287-6748INTERCHANGEABLE
GEAR,SPUR
40826
3120-01-018-7290INTERCHANGEABLE
BUSHING,SLEEVE
388793
5925-01-447-7220INTERCHANGEABLE
CIRCUIT BREAKER
40826
3120-01-479-8091INTERCHANGEABLE
BEARING,SLEEVE
40826

Frequently Asked Questions

What is NSN 5950-00-556-9138?

NSN 5950-00-556-9138 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 5950-00-556-9138?

NSN 5950-00-556-9138 has 2 cross-referenced part numbers: 1233289 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 40826 (Freed Transformer Co).

What NSN replaces 5950-00-556-9138?

There are 5 known substitutes for 5950-00-556-9138: 5120-00-243-7345, 3020-00-287-6748, 3120-01-018-7290 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1233289?

Key specifications for 1233289: Inclosure Type: HERMETICALLY SEALED; Winding Operating Voltage: 5.85 AC VOLTS NOMINAL AND 12.00 AC VOLTS NOMINAL AND 17.55 AC VOLTS NOMINAL AND 23.40 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY OUTPUT; Body Width: 1.375 INCHES NOMINAL IN; Winding Operating Voltage: 24.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT. 19 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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