PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T57766Transformer,power

Thordarson Inc · NSN 5950-00-130-1739 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-130-1739 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-130-1739. Primary manufacturer part number: T57766.
Features
  • Transformer,power — FSC 5950
  • Frequency Rating: 47.0 HERTZ MINIMUM AND 63.0 HERTZ MAXIMUM SINGLE COMPONENT
  • Winding Operating Current: 750.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.859 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Body Length: 3.062 INCHES NOMINAL IN
  • Winding Function and Quantity: 1 PRIMARY AND 2 SECONDARY 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 5950-00-130-1739, 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 Thordarson Inc. Government technical data includes 20 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-130-1739
Primary Part NumberT57766
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerThordarson Inc
StatusACTIVE
Frequency Rating47.0 HERTZ MINIMUM AND 63.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Current750.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width1.859 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting Facility Quantity4 SINGLE GROUP
Body Length3.062 INCHES NOMINAL IN
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Winding Operating Voltage14.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Thread Quantity Per Inch32 SINGLE GROUP
Winding Operating Voltage40.00 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length2.297 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width2.625 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Inclosure TypeHERMETICALLY SEALED
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT
Terminal Type and Quantity6 SOLDER STUD
Body Height4.250 INCHES NOMINAL IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5905-00-226-4744 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
2810-00-294-3523 INTERCHANGEABLE
Ring,piston
5330-00-298-05344374 INTERCHANGEABLE
Seal,plain
Johns Manville Intl
5330-00-317-27924374 INTERCHANGEABLE
Gasket
Eaton Corp Transmission Div
6605-00-352-6726 INTERCHANGEABLE
Converter,regulator
3120-01-286-3073 INTERCHANGEABLE
Bearing,washer,thrust
2540-01-315-41044374 INTERCHANGEABLE
Belt,vehicular Safety
Indiana Mills & Manufacturing Inc Dba Indiana Mills & Manufacturing Inc
4140-01-680-4388ILLEVA0385A4 INTERCHANGEABLE
Fan,centrifugal
J.w.f. Technologies, Llc
5930-01-689-5359 INTERCHANGEABLE
Switch Box
Cross-Reference Index
Part NumberManufacturer
T57766 PRIMARY Thordarson Inc (USA)
4374 PRIMARY The Bechdon Company, Llc (USA)
Related Parts
5905-00-226-4744INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
2810-00-294-3523INTERCHANGEABLE
RING,PISTON
5330-00-298-0534INTERCHANGEABLE
SEAL,PLAIN
4374
5330-00-317-2792INTERCHANGEABLE
GASKET
4374
6605-00-352-6726INTERCHANGEABLE
CONVERTER,REGULATOR
3120-01-286-3073INTERCHANGEABLE
BEARING,WASHER,THRUST
2540-01-315-4104INTERCHANGEABLE
BELT,VEHICULAR SAFETY
4374
4140-01-680-4388INTERCHANGEABLE
FAN,CENTRIFUGAL
ILLEVA0385A4
5930-01-689-5359INTERCHANGEABLE
SWITCH BOX

Frequently Asked Questions

What is NSN 5950-00-130-1739?

NSN 5950-00-130-1739 is a Transformer,power, manufactured by Thordarson Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-130-1739?

NSN 5950-00-130-1739 has 2 cross-referenced part numbers: T57766 (Thordarson Inc), 4374 (The Bechdon Company, Llc).

What NSN replaces 5950-00-130-1739?

There are 9 known substitutes for 5950-00-130-1739: 5905-00-226-4744, 2810-00-294-3523, 5330-00-298-0534 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T57766?

Key specifications for T57766: Frequency Rating: 47.0 HERTZ MINIMUM AND 63.0 HERTZ MAXIMUM SINGLE COMPONENT; Winding Operating Current: 750.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.859 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY. 21 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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