The Switch,rotary, cataloged under National Stock Number 5930-01-280-2194, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). Government technical data includes 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5930-01-280-2194 |
| Primary Part Number | L03998 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| Switch Contact Basic Design | NONPILE-UP NONSYMMETRICAL |
| Terminal Type | TAB W/SCREW |
| Mounting Facility Pattern | TWO POSITION IN-LINE SECOND MOUNTING FACILITY |
| Mounting Facility Pattern | FOUR POSITION CIRCULAR FIRST MOUNTING FACILITY |
| Mounting Facility Circle Radius | 1.609 INCHES NOMINAL FIRST MOUNTING FACILITY IN |
| Contact Load Current Rating | 15.0 AMPERES RESISTIVE LOAD HIGHEST DC VOLTAGE RATING AT SEA LEVEL |
| Contact Load Current Rating | 30.0 AMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Contact Load Current Rating | 30.0 AMPERES RESISTIVE LOAD AND 25.0 AMPERES INDUCTIVE LOAD LOWEST DC VOLTAGE RATING AT SEA LEVEL |
| Mounting Method | BRACKET(S) AND THREADED HOLE(S) FIRST MOUNTING FACILITY |
| Mounting Method | BRACKET(S) AND UNTHREADED HOLE(S) SECOND MOUNTING FACILITY |
| Criticality Code Justification | FEAT |
| Unthreaded Mounting Hole Diameter | 0.312 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Style Designator | TAP, CIRCUIT SELECTOR |
| Features Provided | ACTUATOR KNOB AND DUMMY SECTION |
| Distance Between Mounting Facility Centers | 3.812 INCHES NOMINAL SECOND MOUNTING FACILITY IN |
| Nominal Thread Size | 0.250 INCHES FIRST MOUNTING FACILITY IN |
| Switch Actuator Stop Device Type | FIXED STOP SINGLE ACTUATOR |
| Contact Voltage Rating in Volts | 250.0 HIGHEST DC VOLTAGE RATING AT SEA LEVEL |
| Contact Voltage Rating in Volts | 500.0 AC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 120.0 LOWEST DC VOLTAGE RATING AT SEA LEVEL |
| Thread Class | 2B FIRST MOUNTING FACILITY |
| Switch Actuator Positioning Increment | 90.0 DEGREES SINGLE ACTUATOR |
| Thread Quantity Per Inch | 20 FIRST MOUNTING FACILITY |
| Switch Actuator Indexing Position Quantity | 2 SINGLE ACTUATOR |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) FIRST MOUNTING FACILITY |
| Hazardous Locations/environmental Protection | SHOCK RESISTANT AND VIBRATION RESISTANT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| L03998 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| 123914LK | 3/1 Design control — primary reference U.S. Government activity |
NSN 5930-01-280-2194 is a Switch,rotary, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 5930, Switches. Status: active.
NSN 5930-01-280-2194 has 1 manufacturer part number on file: L03998 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
1 possible match (shared part number, not a government interchangeability claim): 5930-01-702-3259. Verify interchangeability with system specifications before substitution.
Key specifications for L03998: Overall Height: 3.657 INCHES MINIMUM AND 3.719 INCHES MAXIMUM IN; Switch Contact Basic Design: NONPILE-UP NONSYMMETRICAL; Terminal Type: TAB W/SCREW; Mounting Facility Pattern: TWO POSITION IN-LINE SECOND MOUNTING FACILITY. 26 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.