The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-666-6120, 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 Radio Design Labs, Inc. Dba R D L. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Radio Design Labs, Inc. Dba R D L (CAGE 1FVC8); Lockheed Martin Corp Div Space (CAGE 3VQD6) |
| Parameter | Value |
|---|---|
| NSN | 5985-01-666-6120 |
| Primary Part Number | EZ-HSX4 |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Radio Design Labs, Inc. Dba R D L |
| Status | ACTIVE |
| 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 |
|---|---|
| EZ-HSX4 PRIMARY | Radio Design Labs, Inc. Dba R D L (USA) |
| 6773076-101 | Lockheed Martin Corp Div Space (USA) |
| 6773076-001 | Lockheed Martin Corp Div Space (USA) |
| Reference | Meaning |
|---|---|
| 6773076 | D/9 Drawing number reference only Lockheed Martin Corp Div Space |
NSN 5985-01-666-6120 is a Switch,radio Frequency Transmiss, manufactured by Radio Design Labs, Inc. Dba R D L, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-666-6120 has 3 manufacturer part numbers on file: EZ-HSX4 (Radio Design Labs, Inc. Dba R D L), 6773076-101 (Lockheed Martin Corp Div Space), 6773076-001 (Lockheed Martin Corp Div Space).
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.