The O-Ring, cataloged under National Stock Number 5331-01-390-6646, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Raytheon Company (CAGE 54X10); Parker-Hannifin Corp Div O-Ring Division (CAGE 02697); Raytheon Company Dba Raytheon Co (CAGE 3B150) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-390-6646 |
| Primary Part Number | 2-162B1167-80 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| 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 |
|---|---|
| 6400137-2 | Raytheon Company (USA) |
| 2-162B1167-80 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 6400137-2 | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 6400137-2 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5331-01-390-6646 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-390-6646 has 3 manufacturer part numbers on file: 6400137-2 (Raytheon Company), 2-162B1167-80 (Parker-Hannifin Corp Div O-Ring Division), 6400137-2 (Raytheon Company Dba Raytheon Co).
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.