The Vent Ring Assembly, cataloged under National Stock Number 4730-01-253-7265, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Navantia - Propulsion Y Energia Motores - Cartagena. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-253-7265 |
| Primary Part Number | 5500700280 |
| Item Name | Vent Ring Assembly |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Navantia - Propulsion Y Energia Motores - Cartagena |
| 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 |
|---|---|
| 5500700280 | Navantia - Propulsion Y Energia Motores - Cartagena (ESP) |
| 5500700280 | Navantia Sa Sme. Div Navantia Hq (ESP) |
| Reference | Meaning |
|---|---|
| 550 070 02 80 | 3/9 Design control — primary reference M T U of North America Inc |
| 550 070 02 80 | 5/9 Secondary reference Rolls-Royce Solutions Gmbh |
NSN 4730-01-253-7265 is a Vent Ring Assembly, manufactured by Navantia - Propulsion Y Energia Motores - Cartagena, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-253-7265 has 2 manufacturer part numbers on file: 5500700280 (Navantia - Propulsion Y Energia Motores - Cartagena), 5500700280 (Navantia Sa Sme. Div Navantia Hq).
1 possible match (shared part number, not a government interchangeability claim): 4710-01-675-0192. Verify interchangeability with system specifications before substitution.
Key specifications for 5500700280: End Item Identification: JAN NIMITZ CLASS CVN. 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.
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.