The Switch Assembly,ind, cataloged under National Stock Number 1220-01-027-0519, is classified within Federal Supply Class 1220 (Fire Control Computing Sights and Devices) of the Fire Control Equipment group. The manufacturer of record is Lockheed Martin Librascope Corporation. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Switch Assembly,ind |
| FSC / FSG | 1220 — Fire Control Computing Sights and Devices (FSG 12) |
| Manufacturers | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (CAGE 10001); Lockheed Martin Librascope Corporation (CAGE 36090) |
| Parameter | Value |
|---|---|
| NSN | 1220-01-027-0519 |
| Primary Part Number | 77-1978-2 |
| Item Name | Switch Assembly,ind |
| FSC / FSG | 1220 / 12 — Fire Control Computing Sights and Devices |
| Manufacturer | Lockheed Martin Librascope Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 3184813-2 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 77-1978-2 PRIMARY | Lockheed Martin Librascope Corporation (USA) |
| Reference | Meaning |
|---|---|
| 77-1978-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1220-01-027-0519 is a Switch Assembly,ind, manufactured by Lockheed Martin Librascope Corporation, classified under FSC 1220, Fire Control Computing Sights and Devices. Status: active.
NSN 1220-01-027-0519 has 2 manufacturer part numbers on file: 3184813-2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 77-1978-2 (Lockheed Martin Librascope Corporation).
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 1220-01-027-0519 has DEMIL Code D. 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.