The Switch,rotary, cataloged under National Stock Number 5930-00-992-4728, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch. Government technical data includes 27 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5930-00-992-4728 |
| Primary Part Number | SW-291 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED SINGLE ACTUATOR |
| Shaft Diameter | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL AND NONPILE-UP NONSYMMETRICAL |
| Nonturn Device Radius | 0.531 INCHES NOMINAL AT 3:00 OCLOCK IN |
| Terminal Type | TAB, SOLDER LUG |
| Mounting Facility Pattern | TWO POSITION IN-LINE SECOND MOUNTING FACILITY |
| First Flat Length | 0.375 INCHES NOMINAL SINGLE ACTUATOR IN |
| Precious Material | SILVER |
| Contact Load Current Rating | 500.0 MILLIAMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Contact Load Current Rating | 1.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Mounting Method | THREADED STUD(S) SECOND MOUNTING FACILITY |
| Mounting Method | THREADED BUSHING FIRST MOUNTING FACILITY |
| Thread Length | 0.250 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Thread Length | 0.500 INCHES NOMINAL FIRST MOUNTING FACILITY IN |
| Pole Quantity | 1 FIRST SECTION FRONT |
| Pole Quantity | 1 EIGHTH SECTION FRONT |
| Pole Quantity | 1 NINTH SECTION FRONT |
| Style Designator | CIRCULAR WAFER, BUSHING MOUNT |
| Individual Section Quantity | 9 |
| Nonturn Device Type | TAB AT 3:00 OCLOCK |
| Nominal Thread Size | 0.375 INCHES FIRST MOUNTING FACILITY IN |
| Nominal Thread Size | 0.112 INCHES SECOND MOUNTING FACILITY IN |
| Shaft Length | 1.000 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Actuator Stop Device Type | ADJUSTABLE STOP SINGLE ACTUATOR |
| Contact Switching Action | BREAKS BEFORE MAKES NINTH SECTION FRONT |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 110.0 AC AT SEA LEVEL |
| 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 |
|---|---|
| SW-291 | Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA) |
| Reference | Meaning |
|---|---|
| SW-291 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5930-00-992-4728 is a Switch,rotary, manufactured by Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-992-4728 has 1 manufacturer part number on file: SW-291 (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch).
Key specifications for SW-291: Shaft Type: ROUND, FLATTED SINGLE ACTUATOR; Overall Height: 1.312 INCHES NOMINAL IN; Shaft Diameter: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL AND NONPILE-UP NONSYMMETRICAL. 27 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.