The O-Ring, cataloged under National Stock Number 5331-01-475-6305, 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5331-01-475-6305 |
| Primary Part Number | 750420502 |
| Item Name | O-Ring |
| 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) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 750420502 | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
| P998014 | Ge Aviation Systems Limited Div Dowty Propellers (GBR) |
| Reference | Meaning |
|---|---|
| P998014 | 3/2 Design control — primary reference U.S. Government activity |
| 750420502 | 5/9 Secondary reference Lockheed Martin Services, Llc |
| 750420502 | 5/9 Secondary reference Lockheed Martin Aeronautical Systems Support Company Dba Lmassc |
| 5331PL0937977 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 750420502 | 5/9 Secondary reference Ge Aviation Systems Limited Div Dowty Propellers |
NSN 5331-01-475-6305 is a O-Ring, manufactured by Leonardo Spa Aeronautics Division - Pomigliano D'arco Site, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-475-6305 has 2 manufacturer part numbers on file: 750420502 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site), P998014 (Ge Aviation Systems Limited Div Dowty Propellers).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-517-5699. Verify interchangeability with system specifications before substitution.
Key specifications for 750420502: Part Name Assigned by Controlling Agency: O-RING, AIRCRAFT, MAT; End Item Identification: C-130J. 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.