PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18581Transformer,audio Frequency

Astec America Inc. · NSN 5950-00-900-0077 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-900-0077 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-900-0077. Primary manufacturer part number: 18581.
Features
  • Transformer,audio Frequency — FSC 5950
  • Winding Operating Current: 2.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Inclosure Type: FULLY INCLOSED
  • Body Outside Diameter: 0.750 INCHES NOMINAL IN
  • Terminal Type and Quantity: 6 WIRE LEAD
  • Impedance Rating in Ohms: 100.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
  • Maximum Transformer Power Rating: 100.0 MILLIWATTS SINGLE COMPONENT
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY 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 5950-00-900-0077, 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 Astec America Inc.. Government technical data includes 14 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-900-0077
Primary Part Number18581
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAstec America Inc.
StatusACTIVE
Winding Operating Current2.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Inclosure TypeFULLY INCLOSED
Body Outside Diameter0.750 INCHES NOMINAL IN
Terminal Type and Quantity6 WIRE LEAD
Impedance Rating in Ohms100.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Maximum Transformer Power Rating100.0 MILLIWATTS SINGLE COMPONENT
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Body Length0.563 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Mounting MethodTERMINAL SINGLE GROUP
Impedance Rating in Ohms5000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Frequency Rating400.0 HERTZ MAXIMUM SINGLE COMPONENT
Transformer FunctionINPUT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6605-00-064-718214407 INTERCHANGEABLE
Cell Assembly
Tce Canada Ltd
5310-00-145-245918-58-1 INTERCHANGEABLE
Washer,flat
All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners
9540-00-147-5181 INTERCHANGEABLE
Channel,structural
4730-00-257-2121 INTERCHANGEABLE
Tee,pipe
5330-00-489-095818581 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5220-00-566-40531440-7 INTERCHANGEABLE
Gage,plug,thread
Stanley Engineered Fastening Llc
2530-00-670-3832920556 INTERCHANGEABLE
Parts Kit,steering Gear
Am General Llc
4935-00-911-2926 INTERCHANGEABLE
Cover Assembly,pump
5945-00-958-209314407 INTERCHANGEABLE
Solenoid,electrical
Drs C3 & Aviation Company Dba Drs Data & Imaging Systems
5950-01-011-3415SM-C-416400 INTERCHANGEABLE
Transformer,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
14407 Robert M. Hadley Company, Inc. (USA)
2242047 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
18581 PRIMARY Astec America Inc. (USA)
Related Parts
6605-00-064-7182INTERCHANGEABLE
CELL ASSEMBLY
14407
5310-00-145-2459INTERCHANGEABLE
WASHER,FLAT
18-58-1
9540-00-147-5181INTERCHANGEABLE
CHANNEL,STRUCTURAL
4730-00-257-2121INTERCHANGEABLE
TEE,PIPE
5330-00-489-0958INTERCHANGEABLE
SEAL,PLAIN ENCASED
18581
5220-00-566-4053INTERCHANGEABLE
GAGE,PLUG,THREAD
1440-7
2530-00-670-3832INTERCHANGEABLE
PARTS KIT,STEERING GEAR
920556
4935-00-911-2926INTERCHANGEABLE
COVER ASSEMBLY,PUMP
5945-00-958-2093INTERCHANGEABLE
SOLENOID,ELECTRICAL
14407
5950-01-011-3415INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
SM-C-416400
6145-01-049-2356INTERCHANGEABLE
WIRE,ELECTRICAL
14407
5306-01-137-3020INTERCHANGEABLE
BOLT,PUMP,FUEL BOOS
18581

Frequently Asked Questions

What is NSN 5950-00-900-0077?

NSN 5950-00-900-0077 is a Transformer,audio Frequency, manufactured by Astec America Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-900-0077?

NSN 5950-00-900-0077 has 3 cross-referenced part numbers: 14407 (Robert M. Hadley Company, Inc.), 2242047 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 18581 (Astec America Inc.).

What NSN replaces 5950-00-900-0077?

There are 12 known substitutes for 5950-00-900-0077: 6605-00-064-7182, 5310-00-145-2459, 9540-00-147-5181 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 18581?

Key specifications for 18581: Winding Operating Current: 2.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY; Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 0.750 INCHES NOMINAL IN; Terminal Type and Quantity: 6 WIRE LEAD. 14 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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