PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1225791Transformer,audio Frequency

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-00-553-6028 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-553-6028 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-553-6028. Primary manufacturer part number: 1225791.
Features
  • Transformer,audio Frequency — FSC 5950
  • Body Length: 1.312 INCHES NOMINAL IN
  • Maximum Transformer Power Rating: 288.0 MILLIWATTS SINGLE COMPONENT
  • Reliability Indicator: NOT ESTABLISHED
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Primary to Secondary Turn Ratio: 1 TO 5 TO 11-51/64 SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-553-6028, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5950-00-553-6028
Primary Part Number1225791
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Body Length1.312 INCHES NOMINAL IN
Maximum Transformer Power Rating288.0 MILLIWATTS SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Thread Quantity Per Inch32 SINGLE GROUP
Mounting Facility Quantity2 SINGLE GROUP
Primary to Secondary Turn Ratio1 TO 5 TO 11-51/64 SINGLE COMPONENT
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Winding Operating Current25.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Distance Between Mounting Facility Centers0.938 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating400.0 HERTZ MAXIMUM SINGLE COMPONENT
Body Height2.125 INCHES NOMINAL IN
Winding Function and Quantity1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
Winding Operating Current25.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Impedance Rating in Ohms185000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Terminal Type and Quantity7 TAB, SOLDER LUG
Winding Shielding MethodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Impedance Rating in Ohms500.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY
Inclosure TypeHERMETICALLY SEALED
Body Width1.312 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3110-00-100-3529 INTERCHANGEABLE
Cone and Rollers,tapered Roller
5305-00-782-94947SS1-27-3 INTERCHANGEABLE
Screw,cap,hexagon Head
Chief of Engineers Dept of Army
2540-01-117-3025481854 L.H. INTERCHANGEABLE
Adjuster Assembly
Atwood Industries Inc Automotive Div
4320-01-355-053127189 INTERCHANGEABLE
Parts Kit,hydraulic Pump
Allied Systems Company Dba Allied Systems Co
4820-01-425-577827189-1 INTERCHANGEABLE
Valve,check
Ge Aviation Systems Llc Dba Ge Aviation Systems Llc
5340-01-554-4765S2453-15H3-34-2 INTERCHANGEABLE
Cap,protective,dust and Moisture
Joslyn Sunbank Company, Llc Dba Joslyn Sunbank Co Llc
6110-01-560-20654212-340111-27189 INTERCHANGEABLE
Controller,motor
Ward Leonard Ct Llc
6145-01-680-456727189 INTERCHANGEABLE
Cable,special Purpose,electrical
Ortronics, Inc. Dba Ortronics Div Legrand Data Communications
4240-01-692-27487100079186 INTERCHANGEABLE
Goggles,industrial
3m Company
Cross-Reference Index
Part NumberManufacturer
61-873 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
27189 Freed Transformer Co (USA)
1225791 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
Related Parts
3110-00-100-3529INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
5305-00-782-9494INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
7SS1-27-3
2540-01-117-3025INTERCHANGEABLE
ADJUSTER ASSEMBLY
481854 L.H.
4320-01-355-0531INTERCHANGEABLE
PARTS KIT,HYDRAULIC PUMP
27189
4820-01-425-5778INTERCHANGEABLE
VALVE,CHECK
27189-1
5340-01-554-4765INTERCHANGEABLE
CAP,PROTECTIVE,DUST AND MOISTURE
S2453-15H3-34-2
6110-01-560-2065INTERCHANGEABLE
CONTROLLER,MOTOR
4212-340111-27189
6145-01-680-4567INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
27189
4240-01-692-2748INTERCHANGEABLE
GOGGLES,INDUSTRIAL
7100079186

Frequently Asked Questions

What is NSN 5950-00-553-6028?

NSN 5950-00-553-6028 is a Transformer,audio Frequency, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-553-6028?

NSN 5950-00-553-6028 has 3 cross-referenced part numbers: 61-873 (Lockheed Martin Corporation Div Rms - Mitchel Field), 27189 (Freed Transformer Co), 1225791 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).

What NSN replaces 5950-00-553-6028?

There are 9 known substitutes for 5950-00-553-6028: 3110-00-100-3529, 5305-00-782-9494, 2540-01-117-3025 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1225791?

Key specifications for 1225791: Body Length: 1.312 INCHES NOMINAL IN; Maximum Transformer Power Rating: 288.0 MILLIWATTS SINGLE COMPONENT; Reliability Indicator: NOT ESTABLISHED; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP. 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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