PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20828Transformer,audio Frequency

Washington Institute of Technology Inc · NSN 5950-00-231-4456 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-231-4456 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-231-4456. Primary manufacturer part number: 20828.
Features
  • Transformer,audio Frequency — FSC 5950
  • Frequency Rating: 100.0 HERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Maximum Transformer Power Rating: 250.0 MILLIWATTS SINGLE COMPONENT
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Impedance Rating in Ohms: 10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Reliability Indicator: NOT ESTABLISHED
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 1.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP 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 5950-00-231-4456, 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 Washington Institute of Technology Inc. Government technical data includes 20 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-231-4456
Primary Part Number20828
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerWashington Institute of Technology Inc
StatusCANCELLED
Frequency Rating100.0 HERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Thread Quantity Per Inch32 SINGLE GROUP
Maximum Transformer Power Rating250.0 MILLIWATTS SINGLE COMPONENT
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Impedance Rating in Ohms10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Reliability IndicatorNOT ESTABLISHED
Center to Center Distance Between Mounting Facilities Parallel to Length1.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width1.750 INCHES NOMINAL IN
Inclosure TypeHERMETICALLY SEALED
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Height2.188 INCHES NOMINAL IN
Body Length1.875 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.062 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current5.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Terminal Type and Quantity4 TAB, SOLDER LUG
Mounting Facility Quantity4 SINGLE GROUP
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Impedance Rating in Ohms600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Primary to Secondary Turn Ratio1 TO 4 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5310-00-172-6338B-440-1C INTERCHANGEABLE
Nut,plain,clinch
Penn Engineering & Manufacturing Corp
5330-00-922-520120828 INTERCHANGEABLE
Gasket
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
4330-01-204-0356 INTERCHANGEABLE
Filter Element,fluid
3020-01-240-993920828 INTERCHANGEABLE
Gear,spur
Twg Canada Consolidated Inc
Cross-Reference Index
Part NumberManufacturer
20828 Washington Institute of Technology Inc (USA)
Related Parts
5310-00-172-6338INTERCHANGEABLE
NUT,PLAIN,CLINCH
B-440-1C
5330-00-922-5201INTERCHANGEABLE
GASKET
20828
4330-01-204-0356INTERCHANGEABLE
FILTER ELEMENT,FLUID
3020-01-240-9939INTERCHANGEABLE
GEAR,SPUR
20828

Frequently Asked Questions

What is NSN 5950-00-231-4456?

NSN 5950-00-231-4456 is a Transformer,audio Frequency, manufactured by Washington Institute of Technology Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-231-4456?

NSN 5950-00-231-4456 has 1 cross-referenced part number: 20828 (Washington Institute of Technology Inc).

What NSN replaces 5950-00-231-4456?

There are 4 known substitutes for 5950-00-231-4456: 5310-00-172-6338, 5330-00-922-5201, 4330-01-204-0356 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20828?

Key specifications for 20828: Frequency Rating: 100.0 HERTZ MINIMUM AND 10.0 KILOHERTZ MAXIMUM SINGLE COMPONENT; Thread Quantity Per Inch: 32 SINGLE GROUP; Maximum Transformer Power Rating: 250.0 MILLIWATTS SINGLE COMPONENT; Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-231-4456 still in active supply?

NSN 5950-00-231-4456 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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