PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11728Transformer,power

Essex Brownell Inc. Div Essex Group Inc · NSN 5950-00-199-2538 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-199-2538 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-199-2538. Primary manufacturer part number: 11728.
Features
  • Transformer,power — FSC 5950
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Inclosure Type: HERMETICALLY SEALED
  • Frequency Rating: 50.0 HERTZ MINIMUM AND 68.0 HERTZ MAXIMUM SINGLE COMPONENT
  • Body Length: 4.500 INCHES NOMINAL IN
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Input-Output Phase Relationship: SINGLE PHASE TO SINGLE PHASE 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 5950-00-199-2538, 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 Essex Brownell Inc. Div Essex Group Inc. Government technical data includes 16 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-199-2538
Primary Part Number11728
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerEssex Brownell Inc. Div Essex Group Inc
StatusACTIVE
Center to Center Distance Between Mounting Facilities Parallel to Width3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeHERMETICALLY SEALED
Frequency Rating50.0 HERTZ MINIMUM AND 68.0 HERTZ MAXIMUM SINGLE COMPONENT
Body Length4.500 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Mounting Facility Quantity4 SINGLE GROUP
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Body Height5.688 INCHES NOMINAL IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Thread Series DesignatorUNF SINGLE GROUP
Terminal Type and Quantity15 STANDOFF INSULATOR
Nominal Thread Size0.190 INCHES SINGLE GROUP IN
Center to Center Distance Between Mounting Facilities Parallel to Length3.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Thread Quantity Per Inch32 SINGLE GROUP
Body Width4.125 INCHES NOMINAL IN
Winding Function and Quantity1 PRIMARY AND 5 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5365-00-066-8128117-28 INTERCHANGEABLE
Shim
Senior Operations Llc Div Senior Aerospace Ketema
3120-01-108-436111728 INTERCHANGEABLE
Bearing,washer,thrust
Paragon Power Inc Sub of Great Lakes Power Products Inc
5330-01-354-373211728 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
6515-01-574-348982027-436 INTERCHANGEABLE
Forceps,tissue
Vwr International, Llc Dba Vwr Scientific
5330-01-627-4525 INTERCHANGEABLE
Gasket
6530-01-651-874911728 INTERCHANGEABLE
Band,exercise,physical Therapy
Hygenic Corp the
Cross-Reference Index
Part NumberManufacturer
11728 PRIMARY Essex Brownell Inc. Div Essex Group Inc (USA)
Related Parts
5365-00-066-8128INTERCHANGEABLE
SHIM
117-28
3120-01-108-4361INTERCHANGEABLE
BEARING,WASHER,THRUST
11728
5330-01-354-3732INTERCHANGEABLE
SEAL,PLAIN ENCASED
11728
6515-01-574-3489INTERCHANGEABLE
FORCEPS,TISSUE
82027-436
5330-01-627-4525INTERCHANGEABLE
GASKET
6530-01-651-8749INTERCHANGEABLE
BAND,EXERCISE,PHYSICAL THERAPY
11728

Frequently Asked Questions

What is NSN 5950-00-199-2538?

NSN 5950-00-199-2538 is a Transformer,power, manufactured by Essex Brownell Inc. Div Essex Group Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-199-2538?

NSN 5950-00-199-2538 has 1 cross-referenced part number: 11728 (Essex Brownell Inc. Div Essex Group Inc).

What NSN replaces 5950-00-199-2538?

There are 6 known substitutes for 5950-00-199-2538: 5365-00-066-8128, 3120-01-108-4361, 5330-01-354-3732 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11728?

Key specifications for 11728: Center to Center Distance Between Mounting Facilities Parallel to Width: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Inclosure Type: HERMETICALLY SEALED; Frequency Rating: 50.0 HERTZ MINIMUM AND 68.0 HERTZ MAXIMUM SINGLE COMPONENT; Body Length: 4.500 INCHES NOMINAL IN. 16 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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