The O-Ring,aircraft,mat, cataloged under National Stock Number 5331-01-475-6229, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Aeronautics Division - Pomigliano D'arco Site. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | O-Ring,aircraft,mat |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (CAGE A0170); Ge Aviation Systems Limited Div Dowty Propellers (CAGE U7387) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-475-6229 |
| Primary Part Number | 750420514 |
| Item Name | O-Ring,aircraft,mat |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 750420514 | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
| P998026 | Ge Aviation Systems Limited Div Dowty Propellers (GBR) |
| Reference | Meaning |
|---|---|
| 750420514 | 3/2 Design control — primary reference U.S. Government activity |
| P998026 | 5/2 Secondary reference U.S. Government activity |
| 750420514 | 5/9 Secondary reference Lockheed Martin Aeronautical Systems Support Company Dba Lmassc |
NSN 5331-01-475-6229 is a O-Ring,aircraft,mat, manufactured by Leonardo Spa Aeronautics Division - Pomigliano D'arco Site, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-475-6229 has 2 manufacturer part numbers on file: 750420514 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site), P998026 (Ge Aviation Systems Limited Div Dowty Propellers).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-497-8297. 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.