The Buoyancy Box,marine, cataloged under National Stock Number 2090-01-663-5819, is classified within Federal Supply Class 2090 (Miscellaneous Ship and Marine Equipment) of the Ship and Marine Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Buoyancy Box,marine |
| FSC / FSG | 2090 — Miscellaneous Ship and Marine Equipment (FSG 20) |
| Manufacturers | Lockheed Martin Corporation Div Rotary and Mission Systems (CAGE 16331) |
| Parameter | Value |
|---|---|
| NSN | 2090-01-663-5819 |
| Primary Part Number | 4027AS1098-02 |
| Item Name | Buoyancy Box,marine |
| FSC / FSG | 2090 / 20 — Miscellaneous Ship and Marine Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4027AS1098-02 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
NSN 2090-01-663-5819 is a Buoyancy Box,marine, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 2090, Miscellaneous Ship and Marine Equipment. Status: active.
NSN 2090-01-663-5819 has 1 manufacturer part number on file: 4027AS1098-02 (Lockheed Martin Corporation Div Rotary and Mission Systems).
1 possible match (shared part number, not a government interchangeability claim): 9320-01-664-5365. Verify interchangeability with system specifications before substitution.
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.