The Switch,rotary, cataloged under National Stock Number 5930-01-221-8140, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Department of the Army Hq United States Army Communications Research and Development Command. Government technical data includes 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-01-221-8140 |
| Primary Part Number | B4028352 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Department of the Army Hq United States Army Communications Research and Development Command |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED SINGLE ACTUATOR |
| Shaft Diameter | 0.123 INCHES MINIMUM AND 0.126 INCHES MAXIMUM SINGLE ACTUATOR IN |
| Switch Contact Basic Design | CODED |
| Terminal Type | PRINTED CIRCUIT |
| Overall Diameter | 0.547 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN |
| First Flat Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SINGLE ACTUATOR IN |
| Detent Rotational Torque Range | +4.900 TO 9.100 INCH-OUNCES SINGLE ACTUATOR IN |
| Contact Load Current Rating | 200.0 MILLIAMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Contact Load Current Rating | 150.0 MILLIAMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Mounting Method | THREADED BUSHING WITH PANEL SEAL SINGLE MOUNTING FACILITY |
| Thread Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM SINGLE MOUNTING FACILITY IN |
| Contact Arrangement Truth Table | BCD, 1 POLE - 8 POSITIONS SINGLE SECTION |
| Style Designator | SNAP OR LINE |
| Individual Section Quantity | 1 |
| Nonturn Device Type | FLATTED BUSHING AT 3:00 OCLOCK |
| Nonturn Device Type | FLATTED BUSHING AT 9:00 OCLOCK |
| Features Provided | RFI SHIELDING |
| Nominal Thread Size | 0.250 INCHES SINGLE MOUNTING FACILITY IN |
| Shaft Length | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM SINGLE ACTUATOR IN |
| Contact Voltage Rating in Volts | 115.0 AC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 28.0 DC AT SEA LEVEL |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Switch Actuator Positioning Increment | 30.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 4 SINGLE ACTUATOR |
| Thread Series Designator | UNF SINGLE MOUNTING FACILITY |
| Shaft Flat/slot Angular Location | 180.0 DEGREES FROM CONTACT POSITION 1 SINGLE ACTUATOR |
| Flat Height | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM SINGLE ACTUATOR IN |
| 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 |
|---|---|
| B4028352 PRIMARY | Department of the Army Hq United States Army Communications Research and Development Command (USA) |
| Reference | Meaning |
|---|---|
| 51YY23443 | 5/2 Secondary reference U.S. Government activity |
| 51YY23478 | 5/9 Secondary reference U.S. Government activity |
NSN 5930-01-221-8140 is a Switch,rotary, manufactured by Department of the Army Hq United States Army Communications Research and Development Command, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-221-8140 has 1 manufacturer part number on file: B4028352 (Department of the Army Hq United States Army Communications Research and Development Command).
Key specifications for B4028352: Shaft Type: ROUND, FLATTED SINGLE ACTUATOR; Shaft Diameter: 0.123 INCHES MINIMUM AND 0.126 INCHES MAXIMUM SINGLE ACTUATOR IN; Switch Contact Basic Design: CODED; Terminal Type: PRINTED CIRCUIT. 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.