The Retainer Back-Up, cataloged under National Stock Number 5331-01-530-9795, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5331-01-530-9795 |
| Primary Part Number | 7550479-6397304-12 |
| Item Name | Retainer Back-Up |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| MS28774-009D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 6397304-12D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| AS8791/1-009D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-6397304-12D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-6397304-12D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550479-6397304-12 PRIMARY | Naval Sea Systems Command (USA) |
| 803-6397304-XX-12D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550479-6397304-12D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0003-6397304-12D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 803-6397304-XX-12 | 5/1 Secondary reference Naval Sea Systems Command |
| 6397304-12 | 5/1 Secondary reference U.S. Government activity |
| AS8791/1-009 | 5/1 Secondary reference U.S. Government activity |
| G547-0003-6397304-12 | 5/1 Secondary reference U.S. Government activity |
| MS28774-009 | 5/1 Secondary reference U.S. Government activity |
| G547-0002-6397304-12 | 5/1 Secondary reference U.S. Government activity |
| 7550478-6397304-12 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 5331-01-530-9795 is a Retainer Back-Up, manufactured by Naval Sea Systems Command, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-530-9795 has 9 manufacturer part numbers on file: MS28774-009D4 (Naval Inventory Control Point Mechanicsburg), 6397304-12D4 (Naval Inventory Control Point Mechanicsburg), AS8791/1-009D4 (Naval Inventory Control Point Mechanicsburg), G547-0002-6397304-12D4 (Naval Inventory Control Point Mechanicsburg), 7550478-6397304-12D4 (Naval Inventory Control Point Mechanicsburg) and 4 more.
2 possible matches (shared part number, not a government interchangeability claim): 5330-01-544-1685, 5330-01-725-1852. Verify interchangeability with system specifications before substitution.
Key specifications for 7550479-6397304-12: Criticality Code Justification: FEAT; Special Features: QUALITY ASSURANCE TESTED AND CERTIFIED FOR DEEP SUBMERGENCE SYSTEMS. 1 specification is 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.