PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

301803Transformer,audio Frequency

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-00-237-6321 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-237-6321 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-237-6321. Primary manufacturer part number: 301803.
Features
  • Transformer,audio Frequency — FSC 5950
  • Impedance Rating in Ohms: 3570.0 NOMINAL AND 9000.0 NOMINAL AND 22000.0 NOMINAL AND 56000.0 NOMINAL AND 142000.0 NOMINAL AND 357000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Primary to Secondary Turn Ratio: 1 TO 34-2/5 SINGLE COMPONENT
  • Frequency Rating: 250.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
  • Reliability Indicator: NOT ESTABLISHED
  • Impedance Rating in Ohms: 300.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Body Width: 1.688 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-237-6321, 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 17 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-237-6321
Primary Part Number301803
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Impedance Rating in Ohms3570.0 NOMINAL AND 9000.0 NOMINAL AND 22000.0 NOMINAL AND 56000.0 NOMINAL AND 142000.0 NOMINAL AND 357000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Primary to Secondary Turn Ratio1 TO 34-2/5 SINGLE COMPONENT
Frequency Rating250.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Impedance Rating in Ohms300.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Width1.688 INCHES NOMINAL IN
Body Length1.688 INCHES NOMINAL IN
Inclosure TypeFULLY INCLOSED
Thread Quantity Per Inch32 SINGLE GROUP
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Body Height3.562 INCHES NOMINAL IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Terminal Type and Quantity9 TAB, SOLDER LUG
Mounting Facility Quantity2 SINGLE GROUP
Distance Between Mounting Facility Centers0.438 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5360-00-598-7480301803 INTERCHANGEABLE
Spring,helical,compression
Brp Us Inc
4320-00-702-5079301803 INTERCHANGEABLE
Packing,pump
Calgon Carbon Uv Technologies Llc Dba Hyde Marine
5905-01-458-0496970095K0500TA INTERCHANGEABLE
Resistor,fixed,film
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (drawings)
6540-01-614-5234067513-8302 INTERCHANGEABLE
Lens Blank,ophthalmic,multifocal
Lyric Optical Company, Inc. Div Lyric Optical Dba Super Optical International
Cross-Reference Index
Part NumberManufacturer
301803 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
D162065 American Telephone and Telegraph Co (USA)
BA101017ISSUE1 At and T Corp (USA)
Related Parts
5360-00-598-7480INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
301803
4320-00-702-5079INTERCHANGEABLE
PACKING,PUMP
301803
5905-01-458-0496INTERCHANGEABLE
RESISTOR,FIXED,FILM
970095K0500TA
6540-01-614-5234INTERCHANGEABLE
LENS BLANK,OPHTHALMIC,MULTIFOCAL
067513-8302

Frequently Asked Questions

What is NSN 5950-00-237-6321?

NSN 5950-00-237-6321 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 5950-00-237-6321?

NSN 5950-00-237-6321 has 3 cross-referenced part numbers: 301803 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), D162065 (American Telephone and Telegraph Co), BA101017ISSUE1 (At and T Corp).

What NSN replaces 5950-00-237-6321?

There are 4 known substitutes for 5950-00-237-6321: 5360-00-598-7480, 4320-00-702-5079, 5905-01-458-0496 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 301803?

Key specifications for 301803: Impedance Rating in Ohms: 3570.0 NOMINAL AND 9000.0 NOMINAL AND 22000.0 NOMINAL AND 56000.0 NOMINAL AND 142000.0 NOMINAL AND 357000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY; Primary to Secondary Turn Ratio: 1 TO 34-2/5 SINGLE COMPONENT; Frequency Rating: 250.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP. 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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