The O-Ring, cataloged under National Stock Number 5331-00-486-5076, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Defense Maritime Solutions, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-486-5076 |
| Primary Part Number | A52971 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Defense Maritime Solutions, Inc. |
| Status | ACTIVE |
| Cross-Sectional Height | 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN |
| Center Hole Diameter | 24.315 INCHES MINIMUM AND 24.435 INCHES MAXIMUM IN |
| Material | RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR |
| 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 |
|---|---|
| A52971 PRIMARY | Defense Maritime Solutions, Inc. (USA) |
| Reference | Meaning |
|---|---|
| A52971 | 5/9 Secondary reference Eaton Corporation Dba Eaton Inoac Div Eaton |
| 6305-11PC69 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| E-52840 PIECE 14 | 5/9 Secondary reference Eaton Corporation Dba Eaton Inoac Div Eaton |
NSN 5331-00-486-5076 is a O-Ring, manufactured by Defense Maritime Solutions, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-486-5076 has 1 manufacturer part number on file: A52971 (Defense Maritime Solutions, Inc.).
Key specifications for A52971: Cross-Sectional Height: 0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN; Center Hole Diameter: 24.315 INCHES MINIMUM AND 24.435 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 3 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.