The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-734-9281, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Autodyne Manufacturing Co Inc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-734-9281 |
| Primary Part Number | A8491 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Autodyne Manufacturing Co Inc |
| Status | ACTIVE |
| Transformer Function | LINE |
| Inclosure Type | FULLY INCLOSED |
| Body Outside Diameter | 0.875 INCHES NOMINAL IN |
| Mounting Method | TERMINAL SINGLE GROUP |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 150.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Winding Shielding Method | INTERNAL SHIELD GROUNDED TO INCLOSURE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT |
| Body Length | 0.687 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 300.0 HERTZ MINIMUM AND 3.5 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Terminal Type and Quantity | 5 WIRE LEAD |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A8491 | Autodyne Manufacturing Co Inc (USA) |
| M-2780 | Noreast Electronics Co Ltd (CAN) |
| SM-B-603954 | Noreast Electronics Co Ltd (CAN) |
| 41287 | Coast/advanced Chip Magnetics, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SM-B-603954 | 5/9 Secondary reference Valcore Manufacturing Llc Dba Use CAGE Code 04ye2 for Cataloging |
| SM-B-603954 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5950-00-734-9281 is a Transformer,audio Frequency, manufactured by Autodyne Manufacturing Co Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-734-9281 has 4 manufacturer part numbers on file: A8491 (Autodyne Manufacturing Co Inc), M-2780 (Noreast Electronics Co Ltd), SM-B-603954 (Noreast Electronics Co Ltd), 41287 (Coast/advanced Chip Magnetics, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 6210-01-232-8574, 5962-01-236-8480. Verify interchangeability with system specifications before substitution.
Key specifications for A8491: Transformer Function: LINE; Inclosure Type: FULLY INCLOSED; Body Outside Diameter: 0.875 INCHES NOMINAL IN; Mounting Method: TERMINAL SINGLE GROUP. 11 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.