The Switch,rotary, cataloged under National Stock Number 5930-01-237-3275, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Staco Systems, Inc. Dba Staco Systems Div Dba Staco Systems. Government technical data includes 29 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-237-3275 |
| Primary Part Number | 51111/044 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Staco Systems, Inc. Dba Staco Systems Div Dba Staco Systems |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED SINGLE ACTUATOR |
| Shaft Diameter | 0.249 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | TAB, SOLDER LUG |
| Overall Diameter | 1.200 INCHES NOMINAL IN |
| First Flat Length | 0.450 INCHES MINIMUM SINGLE ACTUATOR IN |
| Contact Load Current Rating | 10.0 AMPERES RESISTIVE LOAD AND 7.0 AMPERES INDUCTIVE LOAD AND 5.0 AMPERES LAMP LOAD DC AT SEA LEVEL |
| Contact Load Current Rating | 6.0 AMPERES RESISTIVE LOAD AND 3.0 AMPERES INDUCTIVE LOAD AND 2.0 AMPERES LAMP LOAD AC AT SEA LEVEL |
| Mounting Method | THREADED BUSHING SINGLE MOUNTING FACILITY |
| Thread Length | 0.440 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 1 SINGLE SECTION FRONT |
| Style Designator | TAP, CIRCULAR, BUSHING MOUNT |
| Individual Section Quantity | 1 |
| Nonturn Device Type | SLOTTED BUSHING AT 12:00 OCLOCK |
| Nominal Thread Size | 0.469 INCHES SINGLE MOUNTING FACILITY IN |
| Shaft Length | 0.750 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Actuator Stop Device Type | FIXED STOP SINGLE ACTUATOR |
| Contact Switching Action | MAKES BEFORE BREAKS SINGLE SECTION REAR |
| Contact Voltage Rating in Volts | 115.0 AC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL |
| Operating Temp Range | -54.0 TO 85.0 CELSIUS DEGC |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Switch Actuator Positioning Increment | 30.0 DEGREES SINGLE ACTUATOR |
| Thread Quantity Per Inch | 32 SINGLE MOUNTING FACILITY |
| Switch Actuator Indexing Position Quantity | 4 SINGLE ACTUATOR |
| Thread Series Designator | UNS SINGLE MOUNTING FACILITY |
| Shaft Flat/slot Angular Location | 195.0 DEGREES FROM NONTURN DEVICE SINGLE ACTUATOR |
| Flat Height | 0.210 INCHES NOMINAL SINGLE ACTUATOR IN |
| 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 |
NSN 5930-01-237-3275 is a Switch,rotary, manufactured by Staco Systems, Inc. Dba Staco Systems Div Dba Staco Systems, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-237-3275 has 2 manufacturer part numbers on file: 1603497 (Lockheed Martin Corporation Div Rms - Mitchel Field), 51111/044 (Staco Systems, Inc. Dba Staco Systems Div Dba Staco Systems).
Key specifications for 51111/044: Shaft Type: ROUND, FLATTED SINGLE ACTUATOR; Shaft Diameter: 0.249 INCHES NOMINAL SINGLE ACTUATOR IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Terminal Type: TAB, SOLDER LUG. 29 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.