The Switch,rotary, cataloged under National Stock Number 5930-00-548-5542, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Marelco, Inc.. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5930-00-548-5542 |
| Primary Part Number | B4994 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | Marelco, Inc. |
| Status | ACTIVE |
| Pile-Up Contact Form Arrangement | 4A4A SINGLE SWITCH SINGLE SECTION IN-LINE |
| Switch Contact Basic Design | PILE-UP |
| Terminal Type | TAB, SOLDER LUG |
| Mounting Method | THREADED BUSHING SINGLE MOUNTING FACILITY |
| Thread Length | 0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY IN |
| Individual Section Quantity | 1 |
| Nominal Thread Size | 0.500 INCHES SINGLE MOUNTING FACILITY IN |
| Thread Class | 2A SINGLE MOUNTING FACILITY A |
| Thread Quantity Per Inch | 32 SINGLE MOUNTING FACILITY |
| Switch Actuator Indexing Position Quantity | 2 SINGLE ACTUATOR |
| Thread Series Designator | UN 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 |
|---|---|
| B4994 | Marelco, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 241302 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5930-00-548-5542 is a Switch,rotary, manufactured by Marelco, Inc., classified under FSC 5930, Switches. Status: active.
NSN 5930-00-548-5542 has 1 manufacturer part number on file: B4994 (Marelco, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 5998-01-087-5671, 6130-01-201-9913, 6520-01-548-6522. Verify interchangeability with system specifications before substitution.
Key specifications for B4994: Pile-Up Contact Form Arrangement: 4A4A SINGLE SWITCH SINGLE SECTION IN-LINE; Switch Contact Basic Design: PILE-UP; Terminal Type: TAB, SOLDER LUG; Mounting Method: THREADED BUSHING SINGLE MOUNTING FACILITY. 11 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.