PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T5951Transformer,power

Magnetika Inc · NSN 5950-00-556-0043 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-556-0043 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-556-0043. Primary manufacturer part number: T5951.
Features
  • Transformer,power — FSC 5950
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
  • Reliability Indicator: NOT ESTABLISHED
  • Nominal Thread Size: 0.250 INCHES SINGLE GROUP IN
  • Terminal Type and Quantity: 8 STANDOFF, SOLDER LUG
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-556-0043, 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 Magnetika Inc. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 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
NSN5950-00-556-0043
Primary Part NumberT5951
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerMagnetika Inc
StatusACTIVE
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Nominal Thread Size0.250 INCHES SINGLE GROUP IN
Terminal Type and Quantity8 STANDOFF, SOLDER LUG
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Winding Operating Voltage4.72 AC KILOVOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Width4.000 INCHES MAXIMUM IN
Winding Operating Current45.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Inclosure TypeFULLY INCLOSED
Winding Operating Voltage116.20 AC VOLTS NOMINAL AND 120.00 AC VOLTS NOMINAL AND 123.50 AC VOLTS NOMINAL AND 127.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting Facility Quantity4 SINGLE GROUP
Body Height6.000 INCHES MAXIMUM IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length3.688 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length4.688 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-00-104-8495 INTERCHANGEABLE
Coil,radio Frequency
6625-00-643-854033-384 INTERCHANGEABLE
Probe,test
Gc/waldom Inc
5996-00-665-1845AM471GPN INTERCHANGEABLE
Amplifier,electronic Control
Joint Electronics Type Designation System
2910-01-051-234133384 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
Cross-Reference Index
Part NumberManufacturer
33384 Freed Transformer Co (USA)
T5951 Esco Inc (USA)
992999-1 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
T5951 Opt Industries Inc Div of Electronika Inc (USA)
T5951 PRIMARY Magnetika Inc (USA)
T5951 United Transformer Corp Sub of Opt Industries Inc (USA)
992999-1 PRIMARY Lockheed Martin Corporation Div Rms (USA)
Related Parts
5950-00-104-8495INTERCHANGEABLE
COIL,RADIO FREQUENCY
6625-00-643-8540INTERCHANGEABLE
PROBE,TEST
33-384
5996-00-665-1845INTERCHANGEABLE
AMPLIFIER,ELECTRONIC CONTROL
AM471GPN
2910-01-051-2341INTERCHANGEABLE
FILTER ELEMENT,FLUID
33384

Frequently Asked Questions

What is NSN 5950-00-556-0043?

NSN 5950-00-556-0043 is a Transformer,power, manufactured by Magnetika Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-556-0043?

NSN 5950-00-556-0043 has 7 cross-referenced part numbers: 33384 (Freed Transformer Co), T5951 (Esco Inc), 992999-1 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), T5951 (Opt Industries Inc Div of Electronika Inc), T5951 (Magnetika Inc) and 2 more.

What NSN replaces 5950-00-556-0043?

There are 4 known substitutes for 5950-00-556-0043: 5950-00-104-8495, 6625-00-643-8540, 5996-00-665-1845 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T5951?

Key specifications for T5951: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT; Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT; Reliability Indicator: NOT ESTABLISHED. 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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