The O-Ring, cataloged under National Stock Number 5331-01-646-5543, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-646-5543 |
| Primary Part Number | 1166887 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Fastenal Company Dba Fastenal Co |
| Status | ACTIVE |
| Temp Rating | -40.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF |
| Cross-Sectional Height | 0.188 INCHES NOMINAL IN |
| Outside Diameter | 2.0 INCHES NOMINAL IN |
| Color | BLACK |
| Center Hole Diameter | 1.625 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1166887 PRIMARY | Fastenal Company Dba Fastenal Co (USA) |
NSN 5331-01-646-5543 is a O-Ring, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-646-5543 has 1 manufacturer part number on file: 1166887 (Fastenal Company Dba Fastenal Co).
Key specifications for 1166887: Temp Rating: -40.0 FAHRENHEIT AND 250.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.188 INCHES NOMINAL IN; Outside Diameter: 2.0 INCHES NOMINAL IN; Color: BLACK. 6 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.