PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

26431Transformer,power

Freed Transformer Co · NSN 5950-00-645-7279 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-7279 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-7279. Primary manufacturer part number: 26431.
Features
  • Transformer,power — FSC 5950
  • Frequency Rating: 380.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Winding Operating Voltage: 383.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Mounting Method: FLANGE AND SLOT SINGLE GROUP
  • Winding Operating Voltage: 184.00 AC VOLTS NOMINAL AND 216.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Winding Operating Current: 316.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT ALL SECONDARY
  • 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 5950-00-645-7279, 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 Freed Transformer Co. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-645-7279
Primary Part Number26431
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Frequency Rating380.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Voltage383.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Mounting MethodFLANGE AND SLOT SINGLE GROUP
Winding Operating Voltage184.00 AC VOLTS NOMINAL AND 216.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Operating Current316.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT ALL SECONDARY
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage250.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Mounting Slot Width0.218 INCHES NOMINAL SINGLE GROUP IN
Winding Shielding MethodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Body Length4.312 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Body Width2.688 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length1.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Input-Output Phase RelationshipTHREE PHASE TO THREE PHASE SINGLE COMPONENT
Inclosure TypeOPEN
Body Height2.938 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4720-00-358-610726431 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5330-00-704-691026431 INTERCHANGEABLE
Gasket
Defense & Development Enterprises Llc
5940-00-732-90571117-13-0119 INTERCHANGEABLE
Terminal,feedthru
Concord Electronics, Inc.
5950-01-148-6053989115-1B INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
5935-01-167-70182643-1 INTERCHANGEABLE
Connector,receptacle,electrical
Microwave Devices Inc
5340-01-334-142226431 INTERCHANGEABLE
Hardware Kit,electronic Equipmen
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Cross-Reference Index
Part NumberManufacturer
TR1432 Bae Systems Information and Electronic Systems Integration Inc. (USA)
26431 PRIMARY Freed Transformer Co (USA)
Related Parts
4720-00-358-6107INTERCHANGEABLE
HOSE,PREFORMED
26431
5330-00-704-6910INTERCHANGEABLE
GASKET
26431
5940-00-732-9057INTERCHANGEABLE
TERMINAL,FEEDTHRU
1117-13-0119
5950-01-148-6053INTERCHANGEABLE
COIL,RADIO FREQUENCY
989115-1B
5935-01-167-7018INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2643-1
5340-01-334-1422INTERCHANGEABLE
HARDWARE KIT,ELECTRONIC EQUIPMEN
26431

Frequently Asked Questions

What is NSN 5950-00-645-7279?

NSN 5950-00-645-7279 is a Transformer,power, manufactured by Freed Transformer Co, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-645-7279?

NSN 5950-00-645-7279 has 2 cross-referenced part numbers: TR1432 (Bae Systems Information and Electronic Systems Integration Inc.), 26431 (Freed Transformer Co).

What NSN replaces 5950-00-645-7279?

There are 6 known substitutes for 5950-00-645-7279: 4720-00-358-6107, 5330-00-704-6910, 5940-00-732-9057 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 26431?

Key specifications for 26431: Frequency Rating: 380.0 HERTZ MINIMUM AND 1.0 KILOHERTZ MAXIMUM SINGLE COMPONENT; Winding Operating Voltage: 383.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Mounting Method: FLANGE AND SLOT SINGLE GROUP. 18 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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