PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81819Transformer,audio Frequency

Ge Aviation Systems Llc · NSN 5950-00-646-0431 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-646-0431 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-646-0431. Primary manufacturer part number: 81819.
Features
  • Transformer,audio Frequency — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Distance Between Mounting Facility Centers: 1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Frequency Rating: 380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Impedance Rating in Ohms: 828.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Body Length: 1.000 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 5950-00-646-0431, 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 Ge Aviation Systems Llc. Government technical data includes 15 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-646-0431
Primary Part Number81819
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerGe Aviation Systems Llc
StatusCANCELLED
Reliability IndicatorNOT ESTABLISHED
Distance Between Mounting Facility Centers1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Impedance Rating in Ohms828.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Length1.000 INCHES NOMINAL IN
Winding Operating Current15.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Mounting Facility Quantity2 SINGLE GROUP
Impedance Rating in Ohms338.0 NOMINAL AND 698.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Inclosure TypeOPEN
Body Width1.000 INCHES NOMINAL IN
Body Height0.750 INCHES NOMINAL IN
Terminal Type and Quantity5 WIRE LEAD
Mounting Hole Diameter0.125 INCHES NOMINAL SINGLE GROUP IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5133-00-838-5283 INTERCHANGEABLE
Drill,twist
1650-00-927-48388181-7 INTERCHANGEABLE
Bungee Assembly,spo
Goodrich Aerospace Canada Ltd
2990-01-117-327881819 INTERCHANGEABLE
Muffler,exhaust
Jenny Products, Inc
1680-01-136-046381819 INTERCHANGEABLE
Parts Kit,overhaul,refueling Cou
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
5340-01-716-517581819 INTERCHANGEABLE
Anode,corrosion Preventive
Bird-Johnson Propeller Company, Llc
Cross-Reference Index
Part NumberManufacturer
81819 PRIMARY Ge Aviation Systems Llc (USA)
81819-01 Ge Aviation Systems Llc (USA)
CSC10AS4A412 Moog Inc. (USA)
Related Parts
5133-00-838-5283INTERCHANGEABLE
DRILL,TWIST
1650-00-927-4838INTERCHANGEABLE
BUNGEE ASSEMBLY,SPO
8181-7
2990-01-117-3278INTERCHANGEABLE
MUFFLER,EXHAUST
81819
1680-01-136-0463INTERCHANGEABLE
PARTS KIT,OVERHAUL,REFUELING COU
81819
5340-01-716-5175INTERCHANGEABLE
ANODE,CORROSION PREVENTIVE
81819

Frequently Asked Questions

What is NSN 5950-00-646-0431?

NSN 5950-00-646-0431 is a Transformer,audio Frequency, manufactured by Ge Aviation Systems Llc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-646-0431?

NSN 5950-00-646-0431 has 3 cross-referenced part numbers: 81819 (Ge Aviation Systems Llc), 81819-01 (Ge Aviation Systems Llc), CSC10AS4A412 (Moog Inc.).

What NSN replaces 5950-00-646-0431?

There are 5 known substitutes for 5950-00-646-0431: 5133-00-838-5283, 1650-00-927-4838, 2990-01-117-3278 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81819?

Key specifications for 81819: Reliability Indicator: NOT ESTABLISHED; Distance Between Mounting Facility Centers: 1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Frequency Rating: 380.0 HERTZ MINIMUM AND 420.0 HERTZ MAXIMUM SINGLE COMPONENT; Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-646-0431 still in active supply?

NSN 5950-00-646-0431 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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