PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11731Transformer,power

Freed Transformer Co · NSN 5950-00-243-5814 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-243-5814 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-243-5814. Primary manufacturer part number: 11731.
Features
  • Transformer,power — FSC 5950
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Body Width: 2.750 INCHES NOMINAL IN
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Hole Diameter: 0.156 INCHES NOMINAL SINGLE GROUP IN
  • Winding Operating Voltage: 115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Body Height: 4.625 INCHES NOMINAL IN
  • Frequency Rating: 60.0 HERTZ MAXIMUM 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 5950-00-243-5814, 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 17 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-243-5814
Primary Part Number11731
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerFreed Transformer Co
StatusACTIVE
Mounting Facility Quantity4 SINGLE GROUP
Body Width2.750 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Mounting Hole Diameter0.156 INCHES NOMINAL SINGLE GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Body Height4.625 INCHES NOMINAL IN
Frequency Rating60.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Operating Current430.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Length1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY
Terminal Type and Quantity6 TAB, SOLDER LUG
Winding Function and Quantity2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Center to Center Distance Between Mounting Facilities Parallel to Width2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Length3.000 INCHES NOMINAL IN
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3120-00-075-632611731 INTERCHANGEABLE
Bearing,sleeve
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
6615-00-084-9331 INTERCHANGEABLE
Synchronizer,electrical
5930-00-224-59938896K1 INTERCHANGEABLE
Switch,trigger
Safran Power Usa, Llc
5930-00-235-97281173-1 INTERCHANGEABLE
Switch,rotary
Bae Systems Information and Electronic Systems Integration Inc.
2805-00-271-9054 INTERCHANGEABLE
Breather
5325-00-291-9366 INTERCHANGEABLE
Grommet,nonmetallic
5961-00-409-5048 INTERCHANGEABLE
Semiconductor Device,diode
5330-00-679-97121737761 INTERCHANGEABLE
Gasket
Chrysler Realty Company Llc Dba Daimler Chrysler
5950-00-706-8295 INTERCHANGEABLE
Transformer,radio Frequency
6530-01-212-305911731 INTERCHANGEABLE
Pad,pressure Point,physicotherap
Bio Clinic Corp
Cross-Reference Index
Part NumberManufacturer
11731 PRIMARY Freed Transformer Co (USA)
Related Parts
3120-00-075-6326INTERCHANGEABLE
BEARING,SLEEVE
11731
6615-00-084-9331INTERCHANGEABLE
SYNCHRONIZER,ELECTRICAL
5930-00-224-5993INTERCHANGEABLE
SWITCH,TRIGGER
8896K1
5930-00-235-9728INTERCHANGEABLE
SWITCH,ROTARY
1173-1
2805-00-271-9054INTERCHANGEABLE
BREATHER
5325-00-291-9366INTERCHANGEABLE
GROMMET,NONMETALLIC
5961-00-409-5048INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5330-00-679-9712INTERCHANGEABLE
GASKET
1737761
5950-00-706-8295INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
6530-01-212-3059INTERCHANGEABLE
PAD,PRESSURE POINT,PHYSICOTHERAP
11731
9540-01-296-9109INTERCHANGEABLE
STRUCTURAL SECTION,SPECIAL SHAPE
11731
4730-01-644-8821INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
11731

Frequently Asked Questions

What is NSN 5950-00-243-5814?

NSN 5950-00-243-5814 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 5950-00-243-5814?

NSN 5950-00-243-5814 has 1 cross-referenced part number: 11731 (Freed Transformer Co).

What NSN replaces 5950-00-243-5814?

There are 12 known substitutes for 5950-00-243-5814: 3120-00-075-6326, 6615-00-084-9331, 5930-00-224-5993 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11731?

Key specifications for 11731: Mounting Facility Quantity: 4 SINGLE GROUP; Body Width: 2.750 INCHES NOMINAL IN; Reliability Indicator: NOT ESTABLISHED; Mounting Hole Diameter: 0.156 INCHES NOMINAL SINGLE GROUP IN. 17 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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