The Switch,special, cataloged under National Stock Number 5945-01-302-9740, is classified within Federal Supply Class 5945 (Relays and Solenoids) of the Electrical and Electronic Equipment Components group. The manufacturer of record is U S Dept of Transportation Federal Aviation Administration. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5945-01-302-9740 |
| Primary Part Number | XB2-BF521 |
| Item Name | Switch,special |
| FSC / FSG | 5945 / 59 — Relays and Solenoids |
| Manufacturer | U S Dept of Transportation Federal Aviation Administration |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| XB2-BF521 PRIMARY | U S Dept of Transportation Federal Aviation Administration (USA) |
| Reference | Meaning |
|---|---|
| XB2-BF521 | C/1 Advisory reference — outside the item-of-supply concept Allied Controls, Inc. |
| XB2-BF521 | 5/9 Secondary reference Telemecanique Inc |
NSN 5945-01-302-9740 is a Switch,special, manufactured by U S Dept of Transportation Federal Aviation Administration, classified under FSC 5945, Relays and Solenoids. Status: active.
NSN 5945-01-302-9740 has 1 manufacturer part number on file: XB2-BF521 (U S Dept of Transportation Federal Aviation Administration).
Key specifications for XB2-BF521: End Item Identification: ENGINER GENERATOR (EG). 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5945-01-302-9740 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.