The Switch,rotary, cataloged under National Stock Number 5930-01-016-1556, 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 28 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5930-01-016-1556 |
| Primary Part Number | 277091A2P |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch |
| Status | ACTIVE |
| Shaft Type | ROUND, HOLLOWED, FLATTED FIRST ACTUATOR |
| Shaft Type | ROUND SECOND ACTUATOR |
| Shaft Diameter | 0.123 INCHES MINIMUM AND 0.126 INCHES MAXIMUM SECOND ACTUATOR IN |
| Shaft Diameter | 0.247 INCHES MINIMUM AND 0.251 INCHES MAXIMUM FIRST ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Nonturn Device Radius | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM AT 3:00 OCLOCK IN |
| Terminal Type | TAB, SOLDER LUG |
| Overall Diameter | 1.062 INCHES MAXIMUM IN |
| First Flat Length | 0.234 INCHES MINIMUM AND 0.265 INCHES MAXIMUM FIRST ACTUATOR IN |
| Contact Load Current Rating | 1.0 MILLIAMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Contact Load Current Rating | 500.0 MILLIAMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Mounting Method | THREADED BUSHING SINGLE MOUNTING FACILITY |
| Thread Length | 0.375 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 3 EACH SECTION REAR |
| Style Designator | CIRCULAR WAFER, BUSHING MOUNT |
| Individual Section Quantity | 2 |
| Nonturn Device Type | PIN AT 3:00 OCLOCK |
| Features Provided | VARIABLE RESISTOR |
| Nominal Thread Size | 0.375 INCHES SINGLE MOUNTING FACILITY IN |
| Shaft Length | 0.375 INCHES NOMINAL FIRST ACTUATOR IN |
| Shaft Length | 0.460 INCHES NOMINAL SECOND ACTUATOR IN |
| Switch Actuator Stop Device Type | FIXED STOP FIRST ACTUATOR |
| Contact Switching Action | BREAKS BEFORE MAKES EACH SECTION REAR |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 110.0 AC AT SEA LEVEL |
| Operating Temp Range | -65.0 TO 85.0 CELSIUS DEGC |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Switch Actuator Positioning Increment | 30.0 DEGREES FIRST ACTUATOR |
| 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 |
|---|---|
| 277091A2P | Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch (USA) |
| Reference | Meaning |
|---|---|
| 87-1971-2 | 5/2 Secondary reference U.S. Government activity |
| 33-807761-2 | 3/9 Design control — primary reference General Dynamics Advanced Information Systems Inc. Dba General Dynamics Advanced Information Systems |
NSN 5930-01-016-1556 is a Switch,rotary, manufactured by Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-016-1556 has 1 manufacturer part number on file: 277091A2P (Electro Switch Corp. Dba Oak Grisgsby Div Electroswitch).
Key specifications for 277091A2P: Shaft Type: ROUND, HOLLOWED, FLATTED FIRST ACTUATOR; Shaft Type: ROUND SECOND ACTUATOR; Shaft Diameter: 0.123 INCHES MINIMUM AND 0.126 INCHES MAXIMUM SECOND ACTUATOR IN; Shaft Diameter: 0.247 INCHES MINIMUM AND 0.251 INCHES MAXIMUM FIRST ACTUATOR IN. 28 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.