The O-Ring, cataloged under National Stock Number 5331-01-059-0279, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker Hannifin Corporation Div O-Ring Division. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-059-0279 |
| Primary Part Number | 7866-260 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker Hannifin Corporation Div O-Ring Division |
| Status | ACTIVE |
| Temp Rating | -65.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Outside Diameter | 6.762 INCHES NOMINAL IN |
| Hardness Rating | 60.0 SHORE DUROMETER A NOMINAL |
| Criticality Code Justification | ADYT |
| Elongation Percentage | 200 MAXIMUM |
| Center Hole Diameter | 6.461 INCHES MINIMUM AND 6.507 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 7866-260 | Parker Hannifin Corporation Div O-Ring Division (USA) |
| 457-60-260 | Parco, Llc (USA) |
| Reference | Meaning |
|---|---|
| 1793-260 | 5/2 Secondary reference U.S. Government activity |
| MS29513-260 | 5/9 Secondary reference U.S. Government activity |
| MS29513-260 | 3/1 Design control — primary reference Sae International Dba Sae International |
| MS29513-260 | 5/9 Secondary reference U.S. Government activity |
| SR-822A-60-260 | 5/2 Secondary reference U.S. Government activity |
NSN 5331-01-059-0279 is a O-Ring, manufactured by Parker Hannifin Corporation Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-059-0279 has 2 manufacturer part numbers on file: 7866-260 (Parker Hannifin Corporation Div O-Ring Division), 457-60-260 (Parco, Llc).
Key specifications for 7866-260: Temp Rating: -65.0 FAHRENHEIT AND 200.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Outside Diameter: 6.762 INCHES NOMINAL IN; Hardness Rating: 60.0 SHORE DUROMETER A NOMINAL. 8 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.