The O-Ring, cataloged under National Stock Number 5331-01-393-5639, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Engine Distributors, Inc.. The record lists 16 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Kubota Corporation (CAGE J1802); Kubota Uk Ltd (CAGE K5F98); Beta Marine Ltd (CAGE U6420); Engine Distributors, Inc. (CAGE 31013) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-393-5639 |
| Primary Part Number | 04724-00120 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Engine Distributors, Inc. |
| 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 |
|---|---|
| B06-L REFERENCE 050 | Kubota Corporation (JPN) |
| B05-L REFERENCE 090 | Kubota Uk Ltd (GBR) |
| B06-L/050 | Beta Marine Ltd (GBR) |
| 04724-00120 PRIMARY | Engine Distributors, Inc. (USA) |
| B06-L REFERENCE 050 | Beta Marine Ltd (GBR) |
| B06-L REFERENCE 050 | Kubota Uk Ltd (GBR) |
| B05-L/090 | Kubota Corporation (JPN) |
| B05-L REFERENCE 090 | Beta Marine Ltd (GBR) |
| B06-L/050 | Kubota Corporation (JPN) |
| B05-L/090 | Kubota Uk Ltd (GBR) |
| B05-L REFERENCE 090 | Kubota Corporation (JPN) |
| B06-L/050 | Kubota Uk Ltd (GBR) |
| 04724-00120 | Beta Marine Ltd (GBR) |
| 04724-00120 | Kubota Uk Ltd (GBR) |
| B05-L/090 | Beta Marine Ltd (GBR) |
| 04724-00120 | Kubota Corporation (JPN) |
| Reference | Meaning |
|---|---|
| B06-L REFERENCE 050 | 5/9 Secondary reference Kubota Ltd, Overseas Service Sectionfarm and Industrial Machinery Divisio |
| B05-L REFERENCE 090 | 5/9 Secondary reference Kubota Ltd, Overseas Service Sectionfarm and Industrial Machinery Divisio |
| 04724-00120 | 5/9 Secondary reference Kubota Ltd, Overseas Service Sectionfarm and Industrial Machinery Divisio |
| B06-L/050 | 5/9 Secondary reference Kubota Ltd, Overseas Service Sectionfarm and Industrial Machinery Divisio |
| B05-L/090 | 5/9 Secondary reference Kubota Ltd, Overseas Service Sectionfarm and Industrial Machinery Divisio |
NSN 5331-01-393-5639 is a O-Ring, manufactured by Engine Distributors, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-393-5639 has 16 manufacturer part numbers on file: B06-L REFERENCE 050 (Kubota Corporation), B05-L REFERENCE 090 (Kubota Uk Ltd), B06-L/050 (Beta Marine Ltd), 04724-00120 (Engine Distributors, Inc.), B06-L REFERENCE 050 (Beta Marine Ltd) and 11 more.
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.