The Switch Assembly,overspeed, cataloged under National Stock Number 2920-00-778-2805, is classified within Federal Supply Class 2920 (Engine Electrical System Components, Nonaircraft) of the Engine Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2920-00-778-2805 |
| Item Name | Switch Assembly,overspeed |
| FSC / FSG | 2920 / 29 — Engine Electrical System Components, Nonaircraft |
| Status | ACTIVE |
| General Characteristics Item Description | FOR USE ON AIR COMPRESSOR UNIT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 29817 | 3/9 Design control — primary reference Davey Compressor Co Div of Keco Industries Inc |
| 29817 | 3/2 Design control — primary reference U.S. Government activity |
| 29817 | 5/9 Secondary reference Drs Environmental Systems Inc |
NSN 2920-00-778-2805 is a Switch Assembly,overspeed, classified under FSC 2920, Engine Electrical System Components, Nonaircraft. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5340-01-171-7849. Verify interchangeability with system specifications before substitution.
Key specifications for 2920-00-778-2805: General Characteristics Item Description: FOR USE ON AIR COMPRESSOR UNIT. 1 specification is 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.
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.