The Switch,radio Frequency Transmiss, cataloged under National Stock Number 5985-01-040-0604, 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 Northrop Grumman Systems Corporation. Government technical data includes 13 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-040-0604 |
| Primary Part Number | GS839HD |
| Item Name | Switch,radio Frequency Transmiss |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Body Style | IRREGULAR |
| Pole Quantity | 1 |
| Connector End Design | FEMALE |
| Actuator Current Type and Rating in Amps | 0.07 DC MAXIMUM |
| Coupling Position Quantity | 2 |
| Switch Type | NONTRANSFER |
| Operating Temp Range | -54.0 TO 100.0 CELSIUS DEGC |
| Frequency Rating | 0.5 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY INSERTION LOSS REFERENCE |
| Frequency Rating | 0.5 MEGAHERTZ MINIMUM AND 500.0 MEGAHERTZ MAXIMUM SINGLE FREQUENCY RF POWER HANDLING |
| Terminal Type and Quantity | 3 RECEPTACLE, COAXIAL |
| Switch Operation Sequence | MAKES BEFORE BREAKS |
| Coaxial Connector Series Designation | SMA |
| Throw Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| GS839HD | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GS839HD1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| S1SMA | 3/9 Design control — primary reference Watkins-Johnson Co |
NSN 5985-01-040-0604 is a Switch,radio Frequency Transmiss, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-040-0604 has 1 manufacturer part number on file: GS839HD (Northrop Grumman Systems Corporation).
Key specifications for GS839HD: Overall Height: 1.464 INCHES NOMINAL IN; Body Style: IRREGULAR; Pole Quantity: 1; Connector End Design: FEMALE. 13 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 5985-01-040-0604 has DEMIL Code Q. 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.