The O-Ring, cataloged under National Stock Number 5331-01-577-6038, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Defense Maritime Solutions, Inc.. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Defense Maritime Solutions, Inc. (CAGE 0EYA6) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-577-6038 |
| Primary Part Number | M730000728 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Defense Maritime Solutions, Inc. |
| 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 |
|---|---|
| M730000728 PRIMARY | Defense Maritime Solutions, Inc. (USA) |
| DAAK002585 SEQ #29 | Defense Maritime Solutions, Inc. (USA) |
| PAAI013612 SEQ #29 | Defense Maritime Solutions, Inc. (USA) |
| Reference | Meaning |
|---|---|
| DAAK002585 | D/9 Drawing number reference only Defense Maritime Solutions, Inc. |
NSN 5331-01-577-6038 is a O-Ring, manufactured by Defense Maritime Solutions, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-577-6038 has 3 manufacturer part numbers on file: M730000728 (Defense Maritime Solutions, Inc.), DAAK002585 SEQ #29 (Defense Maritime Solutions, Inc.), PAAI013612 SEQ #29 (Defense Maritime Solutions, Inc.).
4 possible matches (shared part number, not a government interchangeability claim): 5330-01-577-6055, 3110-01-601-0541, 4730-01-699-3466. 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.