The Switch,rotary, cataloged under National Stock Number 5930-00-065-8978, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5930-00-065-8978 |
| Primary Part Number | 900492-2 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Shaft Type | ROUND SINGLE ACTUATOR |
| Shaft Diameter | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | TAB, SOLDER LUG |
| Mounting Facility Pattern | THREE POSITION CIRCULAR SECOND MOUNTING FACILITY |
| Mounting Facility Circle Radius | 0.718 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Contact Load Current Rating | 125.0 MILLIAMPERES INDUCTIVE LOAD AC AT SEA LEVEL |
| Mounting Method | THREADED BUSHING WITH PANEL SEAL FIRST MOUNTING FACILITY |
| Mounting Method | THREADED HOLE(S) SECOND MOUNTING FACILITY |
| Thread Length | 0.375 INCHES NOMINAL FIRST MOUNTING FACILITY IN |
| Pole Quantity | 1 EACH SECTION REAR |
| Style Designator | SQUARE WAFER, PANEL MOUNT |
| Individual Section Quantity | 6 |
| Features Provided | METALLIC INCLOSURE |
| Nominal Thread Size | 0.375 INCHES FIRST MOUNTING FACILITY IN |
| Nominal Thread Size | 0.164 INCHES SECOND MOUNTING FACILITY IN |
| Shaft Length | 0.531 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Actuator Stop Device Type | ADJUSTABLE STOP SINGLE ACTUATOR |
| Contact Switching Action | BREAKS BEFORE MAKES EACH SECTION REAR |
| Contact Voltage Rating in Volts | 115.0 AC AT SEA LEVEL |
| Thread Class | 2A FIRST MOUNTING FACILITY A |
| Thread Class | 2B SECOND MOUNTING FACILITY |
| Switch Actuator Positioning Increment | 30.0 DEGREES SINGLE ACTUATOR |
| Thread Quantity Per Inch | 32 SECOND MOUNTING FACILITY |
| Switch Actuator Indexing Position Quantity | 12 SINGLE ACTUATOR |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SECOND MOUNTING FACILITY |
| Thread Series Designator | UNEF FIRST MOUNTING FACILITY |
| 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 |
|---|---|
| 900492-2 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 900999-3123 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| RS21-27008 | 3/9 Design control — primary reference U.S. Government activity |
| RS21-27008 | 5/9 Secondary reference Chicago Dynamic Industries Inc |
NSN 5930-00-065-8978 is a Switch,rotary, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-065-8978 has 2 manufacturer part numbers on file: 900492-2 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 900999-3123 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Key specifications for 900492-2: Shaft Type: ROUND SINGLE ACTUATOR; Overall Height: 2.500 INCHES NOMINAL IN; Shaft Diameter: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL. 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.