The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-357-3820, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Direct Components, Inc. Dba Direct Components Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-357-3820 |
| Primary Part Number | SW657 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Direct Components, Inc. Dba Direct Components Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| SW657 | Direct Components, Inc. Dba Direct Components Inc (USA) |
| Reference | Meaning |
|---|---|
| 1A20100H01 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5985-01-357-3820 is a Switch,radio Frequency Transmiss, manufactured by Direct Components, Inc. Dba Direct Components Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-357-3820 has 1 manufacturer part number on file: SW657 (Direct Components, Inc. Dba Direct Components Inc).
Key specifications for SW657: End Item Identification: MODE-S BEACON INTERROGATOR. 0 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.
NSN 5985-01-357-3820 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.