The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-023-6955, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Olympus America Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-023-6955 |
| Primary Part Number | 400489-13 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Olympus America Inc |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 2.375 INCHES NOMINAL IN |
| Body Height | 3.812 INCHES NOMINAL IN |
| Maximum Transformer Power Rating | 25.0 WATTS SINGLE COMPONENT |
| Winding Function and Quantity | 2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 2250.0 NOMINAL SINGLE COMPONENT ALL PRIMARY |
| Impedance Rating in Ohms | 4.0 NOMINAL AND 8.0 NOMINAL AND 16.0 NOMINAL AND 500.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY |
| Nominal Thread Size | 0.138 INCHES SINGLE GROUP IN |
| Body Length | 2.750 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 70.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT |
| Center to Center Distance Between Mounting Facilities Parallel to Width | 2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Thread Quantity Per Inch | 32 SINGLE GROUP |
| Primary to Secondary Turn Ratio | 4.24 TO 1 SINGLE COMPONENT |
| Terminal Type and Quantity | 11 TURRET |
| 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 |
|---|---|
| 400489-13 PRIMARY | Olympus America Inc (USA) |
| HS-77 | Magnetek Inc Lighting Products Group (USA) |
| TF4RX13GA | Olympus America Inc (USA) |
| Reference | Meaning |
|---|---|
| TF4RX13GA | 5/9 Secondary reference Olympus Scientific Solutions Technologies Inc. |
| HS-77 | 5/9 Secondary reference Magnetek Inc Huntington Div |
| TF4RX13GA | C/1 Advisory reference — outside the item-of-supply concept Healthy Options for Personal Excellence |
| 400489-13 | 3/9 Design control — primary reference Olympus Scientific Solutions Technologies Inc. |
NSN 5950-01-023-6955 is a Transformer,audio Frequency, manufactured by Olympus America Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-023-6955 has 3 manufacturer part numbers on file: 400489-13 (Olympus America Inc), HS-77 (Magnetek Inc Lighting Products Group), TF4RX13GA (Olympus America Inc).
Key specifications for 400489-13: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Mounting Method: THREADED STUD(S) SINGLE GROUP. 19 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.