The Switch,rotary, cataloged under National Stock Number 5930-01-558-8956, is classified within Federal Supply Class 5930 (Switches) of the Electrical and Electronic Equipment Components group. The manufacturer of record is W R Systems Ltd Dba Alert. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5930-01-558-8956 |
| Primary Part Number | 504508 |
| Item Name | Switch,rotary |
| FSC / FSG | 5930 / 59 — Switches |
| Manufacturer | W R Systems Ltd Dba Alert |
| Status | ACTIVE |
| 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 |
|---|---|
| 504508 PRIMARY | W R Systems Ltd Dba Alert (USA) |
| Reference | Meaning |
|---|---|
| 504508 | 3/9 Design control — primary reference Navy, United States Department of the Dba Space & Naval Warfare Systems Center, Atlantic |
NSN 5930-01-558-8956 is a Switch,rotary, manufactured by W R Systems Ltd Dba Alert, classified under FSC 5930, Switches. Status: active.
NSN 5930-01-558-8956 has 1 manufacturer part number on file: 504508 (W R Systems Ltd Dba Alert).
1 possible match (shared part number, not a government interchangeability claim): 6545-01-630-7584. Verify interchangeability with system specifications before substitution.
Key specifications for 504508: Special Features: SWITCH ASSEMBLY CONTAINS; SWITCH, ROTARY,90 DEGREE, SCREWDRIVER SLOT SHAFT. CONNECTOR, 2-PIN LATCH. 2 CRIMP TERMINALS. WIRE, 22 AWG 1-ORANGE, 1-BLUE. SLEEVING, HEAT SHRINK, 0.250 1-WHITE, 1-BLACK. SOLDER.; Part Name Assigned by Controlling Agency: SWITCH ASSEMBLY; End Item Identification: AN/SRC-40 W/FC4 W. 0 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.