The Switch,rotary, cataloged under National Stock Number 5930-00-685-9937, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Smart Machines, Inc. Dba Barker and Williamson. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-685-9937 |
| Primary Part Number | C31004 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Smart Machines, Inc. Dba Barker and Williamson |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED SINGLE ACTUATOR |
| Shaft Diameter | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | TAB, SOLDER LUG |
| First Flat Length | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Rotor Through Connection Quantity | 2 FIRST SECTION |
| Mounting Method | THREADED BUSHING SINGLE MOUNTING FACILITY |
| Thread Length | 0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 2 SECOND SECTION REAR |
| Pole Quantity | 1 FIRST SECTION FRONT |
| Pole Quantity | 2 FIRST SECTION REAR |
| Individual Section Quantity | 2 |
| Nominal Thread Size | 0.375 INCHES SINGLE MOUNTING FACILITY IN |
| Shaft Length | 0.625 INCHES NOMINAL SINGLE ACTUATOR IN |
| Contact Switching Action | MAKES BEFORE BREAKS FIRST SECTION FRONT |
| Contact Switching Action | BREAKS BEFORE MAKES EACH SECTION REAR |
| Switch Actuator Positioning Increment | 30.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 4 SINGLE ACTUATOR |
| Thread Series Designator | UNEF SINGLE MOUNTING FACILITY |
| Flat Height | 0.216 INCHES NOMINAL SINGLE ACTUATOR IN |
| Throw Quantity | 4 FIRST SECTION FRONT |
| Throw Quantity | 4 FIRST SECTION REAR |
| Throw Quantity | 4 SECOND 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 |
|---|---|
| C31004 PRIMARY | Smart Machines, Inc. Dba Barker and Williamson (USA) |
| Reference | Meaning |
|---|---|
| C31004 | 3/9 Design control — primary reference Barker & Williamson |
NSN 5930-00-685-9937 is a Switch,rotary, manufactured by Smart Machines, Inc. Dba Barker and Williamson, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-685-9937 has 1 manufacturer part number on file: C31004 (Smart Machines, Inc. Dba Barker and Williamson).
1 possible match (shared part number, not a government interchangeability claim): 6140-01-053-0564. Verify interchangeability with system specifications before substitution.
Key specifications for C31004: Shaft Type: ROUND, FLATTED SINGLE ACTUATOR; Shaft Diameter: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Terminal Type: TAB, SOLDER LUG. 23 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.