The O-Ring, cataloged under National Stock Number 5331-01-516-5719, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Atco Products Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-516-5719 |
| Primary Part Number | 0.325 X 0.034 NM304-75 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Atco Products Inc |
| Status | ACTIVE |
| Color | BLACK |
| Material | RUBBER BUTADIENE NITRILE |
| 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 |
|---|---|
| 0.325 X 0.034 NM304-75 PRIMARY | Atco Products Inc (USA) |
| Reference | Meaning |
|---|---|
| 10117205 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| A3279594 | 7/2 Vendor item drawing reference U.S. Government activity |
| 0.324 X 0.304 N0304-75 | 5/9 Secondary reference Atco Products Inc |
NSN 5331-01-516-5719 is a O-Ring, manufactured by Atco Products Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-516-5719 has 1 manufacturer part number on file: 0.325 X 0.034 NM304-75 (Atco Products Inc).
Key specifications for 0.325 X 0.034 NM304-75: Color: BLACK; Material: RUBBER BUTADIENE NITRILE. 2 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.