The Transformer,audio Frequency, cataloged under National Stock Number 5950-01-176-2591, is classified within Federal Supply Class 5950 (Coils and Transformers) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Pico Electronics Inc. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 — Coils and Transformers (FSG 59) |
| Manufacturers | Pico Electronics Inc (CAGE 31669); Frequency Selective Networks, Inc. Dba Frequency Selective Networks Inc (CAGE 56662) |
| Parameter | Value |
|---|---|
| NSN | 5950-01-176-2591 |
| Primary Part Number | KB489 |
| Item Name | Transformer,audio Frequency |
| FSC / FSG | 5950 / 59 — Coils and Transformers |
| Manufacturer | Pico Electronics Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| KB489 | Pico Electronics Inc (USA) |
| 1893921-1 | Frequency Selective Networks, Inc. Dba Frequency Selective Networks Inc (USA) |
| 2716 | Pico Electronics Inc (USA) |
| Reference | Meaning |
|---|---|
| KB489 | 5/9 Secondary reference Opt Industries Inc Div of Electronika Inc |
| 1893921-1 | 3/2 Design control — primary reference U.S. Government activity |
| KB489 | 5/9 Secondary reference Magnetika Inc Div Magnetika/phillipsburg Location |
| 1893921-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
NSN 5950-01-176-2591 is a Transformer,audio Frequency, manufactured by Pico Electronics Inc, classified under FSC 5950, Coils and Transformers. Status: active.
NSN 5950-01-176-2591 has 3 manufacturer part numbers on file: KB489 (Pico Electronics Inc), 1893921-1 (Frequency Selective Networks, Inc. Dba Frequency Selective Networks Inc), 2716 (Pico Electronics Inc).
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.