The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-438-4970, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5950-01-438-4970 |
| Primary Part Number | 071691 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Impedance Rating in Ohms | 75.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY |
| 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 |
|---|---|
| 071691 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 13488 | 5/2 Secondary reference U.S. Government activity |
NSN 5950-01-438-4970 is a Transformer,audio Frequency, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-438-4970 has 1 manufacturer part number on file: 071691 (L3 Technologies, Inc. Div L3 Keo).
2 possible matches (shared part number, not a government interchangeability claim): 5895-01-690-0309, 5310-01-696-9696. Verify interchangeability with system specifications before substitution.
Key specifications for 071691: Impedance Rating in Ohms: 75.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY. 1 specification is 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.