The Switch,rotary, cataloged under National Stock Number 5930-00-064-2991, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Dynamic Ems Ltd. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5930-00-064-2991 |
| Primary Part Number | 44A30-01-1-12-N |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Dynamic Ems Ltd |
| Status | ACTIVE |
| Shaft Type | ROUND, FLATTED SINGLE ACTUATOR |
| Shaft Diameter | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Nonturn Device Radius | 0.375 INCHES NOMINAL AT 3:00 OCLOCK IN |
| Terminal Type | TAB, SOLDER LUG |
| Overall Diameter | 1.170 INCHES NOMINAL IN |
| First Flat Length | 0.250 INCHES NOMINAL SINGLE ACTUATOR IN |
| Detent Rotational Torque Range | +8.000 TO 115.000 INCH-OUNCES SINGLE ACTUATOR IN |
| Precious Material | SILVER |
| Rotor Through Connection Quantity | 1 SINGLE SECTION |
| Contact Load Current Rating | 1.0 AMPERES RESISTIVE LOAD AND 250.0 MILLIAMPERES INDUCTIVE LOAD AC AT SEA LEVEL |
| Contact Load Current Rating | 1.0 AMPERES RESISTIVE LOAD AND 100.0 MILLIAMPERES INDUCTIVE LOAD DC AT SEA LEVEL |
| Mounting Method | THREADED BUSHING SINGLE MOUNTING FACILITY |
| Thread Length | 0.437 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 | TAB AT 3:00 OCLOCK |
| Nominal Thread Size | 0.375 INCHES SINGLE MOUNTING FACILITY IN |
| Shaft Length | 0.437 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Actuator Stop Device Type | FIXED STOP SINGLE ACTUATOR |
| Contact Switching Action | BREAKS BEFORE MAKES 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 |
| Precious Material and Location | CONTACTS SILVER |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Switch Actuator Positioning Increment | 30.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 12 SINGLE ACTUATOR |
| Thread Series Designator | UNEF SINGLE MOUNTING FACILITY |
| 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 |
|---|---|
| 44A30-01-1-12-N | Dynamic Ems Ltd (GBR) |
| 182001 | Pennant International Limited (GBR) |
| 5052-936 | Raytheon Company Div Rmd Strategic (USA) |
| 499-049-009 | L3harris Interstate Electronics Corporation (USA) |
| Reference | Meaning |
|---|---|
| 44A30-01-1-12N | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-00-064-2991 is a Switch,rotary, manufactured by Dynamic Ems Ltd, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-064-2991 has 4 manufacturer part numbers on file: 44A30-01-1-12-N (Dynamic Ems Ltd), 182001 (Pennant International Limited), 5052-936 (Raytheon Company Div Rmd Strategic), 499-049-009 (L3harris Interstate Electronics Corporation).
5 possible matches (shared part number, not a government interchangeability claim): 5955-00-247-8627, 5840-00-854-3313, 5895-01-074-3139. Verify interchangeability with system specifications before substitution.
Key specifications for 44A30-01-1-12-N: Shaft Type: ROUND, FLATTED SINGLE ACTUATOR; Shaft Diameter: 0.250 INCHES NOMINAL SINGLE ACTUATOR IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Nonturn Device Radius: 0.375 INCHES NOMINAL AT 3:00 OCLOCK IN. 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.