The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-646-0364, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Magnetika Inc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-00-646-0364 |
| Primary Part Number | H-4657 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Magnetika Inc |
| Status | ACTIVE |
| Mounting Facility Quantity | 2 SINGLE GROUP |
| Inclosure Type | OPEN |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 1.875 INCHES MAXIMUM IN |
| Winding Function and Quantity | 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 750.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Impedance Rating in Ohms | 975.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| Distance Between Mounting Facility Centers | 2.016 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 2.094 INCHES MAXIMUM IN |
| Winding Operating Current | 105.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY |
| Reliability Indicator | NOT ESTABLISHED |
| Primary to Secondary Turn Ratio | 1 TO 1-19/64 SINGLE COMPONENT |
| Terminal Type and Quantity | 6 TAB, SOLDER LUG |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP |
| 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 |
|---|---|
| H-4657 | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| H-4657 | 5/9 Secondary reference U.S. Government activity |
| 460969-1 | 3/9 Design control — primary reference Rca Corp Distributor and Special Products Div |
| 460969-1 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
NSN 5950-00-646-0364 is a Transformer,audio Frequency, manufactured by Magnetika Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-00-646-0364 has 1 manufacturer part number on file: H-4657 (Magnetika Inc).
Key specifications for H-4657: Overall Height: 1.922 INCHES NOMINAL IN; Mounting Facility Quantity: 2 SINGLE GROUP; Inclosure Type: OPEN; Mounting Method: THREADED STUD(S) SINGLE GROUP. 15 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.