The Switch,rotary, cataloged under National Stock Number 5930-01-018-2328, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-018-2328 |
| Primary Part Number | 4050-452 PIECE 147 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL AND NONPILE-UP NONSYMMETRICAL |
| Terminal Type | SCREW |
| Mounting Facility Pattern | ISOSCELES TRIANGLE SINGLE MOUNTING FACILITY |
| Contact Load Current Rating | 20.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Unthreaded Mounting Hole Diameter | 0.221 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 1 THIRD SECTION FRONT |
| Pole Quantity | 1 SECOND SECTION FRONT |
| Style Designator | TAP, CIRCUIT SELECTOR |
| Switch Actuator Momentary Position | COUNTERCLOCKWISE SINGLE ACTUATOR |
| Longest Vertical Distance Between Mounting Centers | 2.188 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Individual Section Quantity | 5 |
| Shortest Horizontal Distance Between Mounting Centers | 1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Contact Switching Action | BREAKS BEFORE MAKES SECOND SECTION FRONT |
| Contact Switching Action | BREAKS BEFORE MAKES THIRD SECTION FRONT |
| Contact Voltage Rating in Volts | 125.0 AC AT SEA LEVEL |
| Switch Actuator Indexing Position Quantity | 3 SINGLE ACTUATOR |
| Longest Horizontal Distance Between Mounting Centers | 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Throw Quantity | 2 SECOND SECTION FRONT |
| Throw Quantity | 2 THIRD SECTION FRONT |
| Hazardous Locations/environmental Protection | EXPLOSION PROOF |
| 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 |
|---|---|
| 4050-452 PIECE 147 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 74905LC | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-01-018-2328 is a Switch,rotary, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-018-2328 has 1 manufacturer part number on file: 4050-452 PIECE 147 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 4050-452 PIECE 147: Overall Height: 2.906 INCHES NOMINAL IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL AND NONPILE-UP NONSYMMETRICAL; Terminal Type: SCREW; Mounting Facility Pattern: ISOSCELES TRIANGLE SINGLE MOUNTING FACILITY. 20 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.