The Switch,rotary, cataloged under National Stock Number 5930-00-258-9996, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Star Manufacturing International Inc. Dba Lang Manufacturing Company. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5930-00-258-9996 |
| Primary Part Number | B5A |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Star Manufacturing International Inc. Dba Lang Manufacturing Company |
| Status | ACTIVE |
| Shaft Type | ROUND SINGLE ACTUATOR |
| Shaft Diameter | 0.188 INCHES NOMINAL SINGLE ACTUATOR IN |
| Switch Contact Basic Design | NONPILE-UP SYMMETRICAL |
| Terminal Type | TAB W/SCREW |
| Mounting Facility Pattern | TWO POSITION DIAGONAL SINGLE MOUNTING FACILITY |
| Contact Load Current Rating | 0.6 AMPERES RESISTIVE LOAD AC AT SEA LEVEL |
| Contact Load Current Rating | 0.6 AMPERES RESISTIVE LOAD DC AT SEA LEVEL |
| Mounting Method | BASE SINGLE MOUNTING FACILITY |
| Unthreaded Mounting Hole Diameter | 0.141 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Pole Quantity | 2 SINGLE SECTION FRONT |
| Longest Vertical Distance Between Mounting Centers | 0.812 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Individual Section Quantity | 1 |
| Knob Manufacturer Code | 04009 |
| Features Provided | ACTUATOR KNOB |
| Shaft Length | 0.375 INCHES NOMINAL SINGLE ACTUATOR IN |
| Contact Voltage Rating in Volts | 600.0 DC AT SEA LEVEL |
| Contact Voltage Rating in Volts | 600.0 AC AT SEA LEVEL |
| Switch Actuator Positioning Increment | 60.0 DEGREES SINGLE ACTUATOR |
| Switch Actuator Indexing Position Quantity | 2 SINGLE ACTUATOR |
| Longest Horizontal Distance Between Mounting Centers | 0.500 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Throw Quantity | 2 SINGLE SECTION FRONT |
| 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 |
|---|---|
| B5A PRIMARY | Star Manufacturing International Inc. Dba Lang Manufacturing Company (USA) |
| NF106PC2 PRIMARY | Star Manufacturing International Inc. Dba Lang Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| B5A | 5/9 Secondary reference Cooper Industries Inc Cooper Distribution Equipment Div |
| 958PC2 | 3/2 Design control — primary reference U.S. Government activity |
| S6307F3154715PC2 | 3/2 Design control — primary reference U.S. Government activity |
| S6307F3154049PC2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-00-258-9996 is a Switch,rotary, manufactured by Star Manufacturing International Inc. Dba Lang Manufacturing Company, classified under FSC 5930, Switches. Status: active.
NSN 5930-00-258-9996 has 2 manufacturer part numbers on file: B5A (Star Manufacturing International Inc. Dba Lang Manufacturing Company), NF106PC2 (Star Manufacturing International Inc. Dba Lang Manufacturing Company).
4 possible matches (shared part number, not a government interchangeability claim): 6240-00-299-5874, 4320-00-313-9007, 6740-00-521-0652. Verify interchangeability with system specifications before substitution.
Key specifications for B5A: Shaft Type: ROUND SINGLE ACTUATOR; Shaft Diameter: 0.188 INCHES NOMINAL SINGLE ACTUATOR IN; Switch Contact Basic Design: NONPILE-UP SYMMETRICAL; Terminal Type: TAB W/SCREW. 21 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.