PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

820974Transformer,audio Frequency

L3 Aviation Products, Inc. Dba L3 Technologies · NSN 5950-00-710-4528 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-710-4528 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-710-4528. Primary manufacturer part number: 820974.
Features
  • Transformer,audio Frequency — FSC 5950
  • Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN
  • Primary to Secondary Turn Ratio: 1 TO 4-1/4 SINGLE COMPONENT
  • Reliability Indicator: NOT ESTABLISHED
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.187 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Body Width: 1.625 INCHES NOMINAL IN
  • Maximum Transformer Power Rating: 3.0 WATTS SINGLE COMPONENT
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO INCLOSURE 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 5950-00-710-4528, 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 L3 Aviation Products, Inc. Dba L3 Technologies. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN5950-00-710-4528
Primary Part Number820974
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerL3 Aviation Products, Inc. Dba L3 Technologies
StatusACTIVE
Nominal Thread Size0.138 INCHES SINGLE GROUP IN
Primary to Secondary Turn Ratio1 TO 4-1/4 SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Center to Center Distance Between Mounting Facilities Parallel to Width1.187 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Body Width1.625 INCHES NOMINAL IN
Maximum Transformer Power Rating3.0 WATTS SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE SINGLE COMPONENT
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Terminal Type and Quantity4 STANDOFF, SOLDER LUG
Winding Operating Current20.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Thread Quantity Per Inch32 SINGLE GROUP
Body Length1.625 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length1.187 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating5.0 KILOHERTZ MINIMUM AND 15.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Impedance Rating in Ohms10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Inclosure TypeFULLY INCLOSED
Mounting Facility Quantity4 SINGLE GROUP
Body Height2.375 INCHES NOMINAL IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Impedance Rating in Ohms330000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-100-0641 INTERCHANGEABLE
Cup,tapered Roller Bearing
5950-00-679-76919190853 INTERCHANGEABLE
Transformer,power
Us Army Aviation and Missile Command
6680-01-276-4049XM-36485-51-0510-I-H INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
3040-01-507-226142072 INTERCHANGEABLE
Rod,piston,linear Actuating Cyli
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
820974 L3 Aviation Products, Inc. Dba L3 Technologies (USA)
820975 L3 Aviation Products, Inc. Dba L3 Technologies (USA)
42072 Freed Transformer Co (USA)
Related Parts
3110-00-100-0641INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
5950-00-679-7691INTERCHANGEABLE
TRANSFORMER,POWER
9190853
6680-01-276-4049INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
XM-36485-51-0510-I-H
3040-01-507-2261INTERCHANGEABLE
ROD,PISTON,LINEAR ACTUATING CYLI
42072

Frequently Asked Questions

What is NSN 5950-00-710-4528?

NSN 5950-00-710-4528 is a Transformer,audio Frequency, manufactured by L3 Aviation Products, Inc. Dba L3 Technologies, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-710-4528?

NSN 5950-00-710-4528 has 3 cross-referenced part numbers: 820974 (L3 Aviation Products, Inc. Dba L3 Technologies), 820975 (L3 Aviation Products, Inc. Dba L3 Technologies), 42072 (Freed Transformer Co).

What NSN replaces 5950-00-710-4528?

There are 4 known substitutes for 5950-00-710-4528: 3110-00-100-0641, 5950-00-679-7691, 6680-01-276-4049 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 820974?

Key specifications for 820974: Nominal Thread Size: 0.138 INCHES SINGLE GROUP IN; Primary to Secondary Turn Ratio: 1 TO 4-1/4 SINGLE COMPONENT; Reliability Indicator: NOT ESTABLISHED; Overall Height: 2.750 INCHES NOMINAL IN. 22 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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