The Vent,louvered, cataloged under National Stock Number 2040-01-252-4951, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Vent,louvered |
| FSC / FSG | 2040 — Marine Hardware and Hull Items (FSG 20) |
| Parameter | Value |
|---|---|
| NSN | 2040-01-252-4951 |
| Item Name | Vent,louvered |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Reference | Meaning |
|---|---|
| 1488-1 | 3/2 Design control — primary reference U.S. Government activity |
| 1488 | 5/9 Secondary reference U.S. Government activity |
NSN 2040-01-252-4951 is a Vent,louvered, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-548-9325, 1005-01-641-8547. 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.