The Switch,rotary, cataloged under National Stock Number 5930-01-031-9979, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-031-9979 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Status | ACTIVE |
| Shaft Type | RECTANGULAR/SQUARE, THREADED HOLE SINGLE ACTUATOR |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | TAB W/SCREW |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY |
| Contact Load Current Rating | 10.0 AMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Contact Load Current Rating | 10.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Mounting Method | THREADED HOLE(S) SINGLE MOUNTING FACILITY |
| Pole Quantity | 1 EACH SECTION REAR |
| Style Designator | TAP, CIRCUIT SELECTOR |
| Longest Vertical Distance Between Mounting Centers | 1.640 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Individual Section Quantity | 2 |
| Square Shaft Size | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Knob Manufacturer Code | 82121 |
| Features Provided | ACTUATOR KNOB |
| Nominal Thread Size | 0.190 INCHES SINGLE MOUNTING FACILITY IN |
| Shaft Length | 0.750 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Actuator Stop Device Type | FIXED STOP SINGLE ACTUATOR |
| Knob Manufacturer Part Number | A |
| Contact Switching Action | BREAKS BEFORE MAKES EACH SECTION REAR |
| Contact Voltage Rating in Volts | 125.0 AC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 120.0 DC AT SEA LEVEL |
| Thread Class | 2B SINGLE MOUNTING FACILITY |
| Switch Actuator Positioning Increment | 90.0 DEGREES SINGLE ACTUATOR |
| Thread Quantity Per Inch | 24 SINGLE MOUNTING FACILITY |
| Switch Actuator Indexing Position Quantity | 2 SINGLE ACTUATOR |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SINGLE MOUNTING FACILITY |
| Longest Horizontal Distance Between Mounting Centers | 1.640 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Throw Quantity | 2 EACH 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 |
| Reference | Meaning |
|---|---|
| 553F405G01 | C/1 Advisory reference — outside the item-of-supply concept Westinghouse Electric Corp Power Generation-Generator Div |
| 553F405G01 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 121905LU | 5/2 Secondary reference U.S. Government activity |
| 553F405H01 | 3/9 Design control — primary reference Westinghouse Electric Corp Power Generation-Generator Div |
NSN 5930-01-031-9979 is a Switch,rotary, classified under FSC 5930, Switches. Status: active.
Key specifications for 5930-01-031-9979: Shaft Type: RECTANGULAR/SQUARE, THREADED HOLE SINGLE ACTUATOR; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Terminal Type: TAB W/SCREW; Mounting Facility Pattern: FOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY. 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.