The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-052-7303, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Support Services Corp. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5950-01-052-7303 |
| Primary Part Number | 138C723H01 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| Mounting Facility Quantity | 4 SINGLE GROUP |
| Inclosure Type | FULLY INCLOSED |
| Center to Center Distance Between Mounting Facilities Parallel to Length | 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN |
| Mounting Method | THREADED STUD(S) SINGLE GROUP |
| Body Width | 3.062 INCHES NOMINAL IN |
| Body Height | 3.875 INCHES NOMINAL IN |
| Maximum Transformer Power Rating | 20.0 WATTS SINGLE COMPONENT |
| Winding Function and Quantity | 2 PRIMARY AND 4 SECONDARY SINGLE COMPONENT |
| Impedance Rating in Ohms | 2.5 NOMINAL AND 7.5 NOMINAL SINGLE COMPONENT FOURTH SECONDARY |
| Impedance Rating in Ohms | 2.5 NOMINAL AND 7.5 NOMINAL SINGLE COMPONENT THIRD SECONDARY |
| Impedance Rating in Ohms | 50.0 NOMINAL AND 125.0 NOMINAL SINGLE COMPONENT ALL PRIMARY |
| Impedance Rating in Ohms | 50.0 NOMINAL AND 125.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY |
| Impedance Rating in Ohms | 50.0 NOMINAL AND 125.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY |
| Nominal Thread Size | 0.164 INCHES SINGLE GROUP IN |
| Body Length | 3.562 INCHES NOMINAL IN |
| Reliability Indicator | NOT ESTABLISHED |
| Frequency Rating | 10.0 HERTZ MINIMUM AND 40.0 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 |
| Terminal Type and Quantity | 18 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 |
|---|---|
| 138C723H01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| ASH-989 | Magnetika Inc (USA) |
| Reference | Meaning |
|---|---|
| 138C723H01 | 3/9 Design control — primary reference U.S. Government activity |
| ASH-989 | 5/9 Secondary reference U.S. Government activity |
NSN 5950-01-052-7303 is a Transformer,audio Frequency, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-052-7303 has 2 manufacturer part numbers on file: 138C723H01 (Northrop Grumman Support Services Corp), ASH-989 (Magnetika Inc).
Key specifications for 138C723H01: Mounting Facility Quantity: 4 SINGLE GROUP; Inclosure Type: FULLY INCLOSED; Center to Center Distance Between Mounting Facilities Parallel to Length: 2.625 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Mounting Method: THREADED STUD(S) SINGLE GROUP. 21 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.