The O-Ring, cataloged under National Stock Number 5331-01-273-6808, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Yale Industrial Products, Inc. Div Duff Norton Company. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Yale Industrial Products, Inc. Div Duff Norton Company (CAGE 18740) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-273-6808 |
| Primary Part Number | 561K12 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Yale Industrial Products, Inc. Div Duff Norton Company |
| 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 |
|---|---|
| 561K12 | Yale Industrial Products, Inc. Div Duff Norton Company (USA) |
| Reference | Meaning |
|---|---|
| 561K12 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5331-01-273-6808 is a O-Ring, manufactured by Yale Industrial Products, Inc. Div Duff Norton Company, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-273-6808 has 1 manufacturer part number on file: 561K12 (Yale Industrial Products, Inc. Div Duff Norton Company).
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.