The Switch,rotary, cataloged under National Stock Number 5930-01-254-9720, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Shallco, Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-254-9720 |
| Primary Part Number | 28-PM-4 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Shallco, Inc |
| Status | ACTIVE |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | PRINTED CIRCUIT |
| Overall Diameter | 0.500 INCHES NOMINAL IN |
| Precious Material | SILVER AND GOLD |
| Contact Load Current Rating | 3.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Mounting Method | PRINTED CIRCUIT SINGLE MOUNTING FACILITY |
| Pole Quantity | 2 SINGLE SECTION REAR |
| Style Designator | MINIATURE, PIN MOUNT |
| Individual Section Quantity | 1 |
| Contact Switching Action | MAKES BEFORE BREAKS SINGLE SECTION REAR |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL |
| Precious Material and Location | CONTACT SURFACES SILVER AND CNTACT SURFACES GOLD |
| Operating Temp Range | -65.0 TO 85.0 CELSIUS DEGC |
| Switch Actuator Positioning Increment | 36.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 4 SINGLE ACTUATOR |
| Throw Quantity | 4 SINGLE SECTION REAR |
| 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 |
|---|---|
| 28-PM-4 PRIMARY | Shallco, Inc (USA) |
| Reference | Meaning |
|---|---|
| 28-PM-4 | 5/9 Secondary reference Meggitt (new Hampshire), Inc |
NSN 5930-01-254-9720 is a Switch,rotary, manufactured by Shallco, Inc, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-254-9720 has 1 manufacturer part number on file: 28-PM-4 (Shallco, Inc).
Key specifications for 28-PM-4: Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Terminal Type: PRINTED CIRCUIT; Overall Diameter: 0.500 INCHES NOMINAL IN; Precious Material: SILVER AND GOLD. 16 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.
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.