The Switch,rotary, cataloged under National Stock Number 5930-01-016-2499, 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 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5930-01-016-2499 |
| Primary Part Number | L01999 |
| 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 SYMMETRICAL |
| Terminal Type | SCREW |
| Mounting Facility Pattern | ISOSCELES TRIANGLE SINGLE MOUNTING FACILITY |
| Contact Load Current Rating | 20.0 AMPERES RESISTIVE LOAD LOWEST AC VOLTAGE RATING AT SEA LEVEL |
| Contact Load Current Rating | 5.0 AMPERES RESISTIVE LOAD HIGHEST AC VOLTAGE RATING AT SEA LEVEL |
| Mounting Method | BRACKET(S) SINGLE MOUNTING FACILITY |
| Criticality Code Justification | FEAT |
| Unthreaded Mounting Hole Diameter | 0.221 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 2 SINGLE SECTION FRONT |
| Style Designator | TAP, CIRCUIT SELECTOR |
| Longest Vertical Distance Between Mounting Centers | 2.188 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Individual Section Quantity | 1 |
| Shortest Horizontal Distance Between Mounting Centers | 1.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Knob Manufacturer Code | 82121 |
| Features Provided | ACTUATOR KNOB |
| Switch Actuator Stop Device Type | FIXED STOP SINGLE ACTUATOR |
| Knob Manufacturer Part Number | B |
| Contact Switching Action | BREAKS BEFORE MAKES SINGLE SECTION FRONT |
| Contact Voltage Rating in Volts | 500.0 HIGHEST AC VOLTAGE RATING AT SEA LEVEL |
| Contact Voltage Rating in Volts | 125.0 LOWEST AC VOLTAGE RATING AT SEA LEVEL |
| Switch Actuator Positioning Increment | 45.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 2 SINGLE ACTUATOR |
| Longest Horizontal Distance Between Mounting Centers | 2.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Throw Quantity | 1 SINGLE SECTION FRONT |
| Hazardous Locations/environmental Protection | DUSTPROOF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| L01999 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| 2401G | 3/1 Design control — primary reference U.S. Government activity |
NSN 5930-01-016-2499 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 5930-01-016-2499 has 1 manufacturer part number on file: L01999 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
Key specifications for L01999: Overall Height: 2.906 INCHES NOMINAL IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Terminal Type: SCREW; Mounting Facility Pattern: ISOSCELES TRIANGLE SINGLE MOUNTING FACILITY. 25 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.