The O-Ring, cataloged under National Stock Number 5331-01-673-9889, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is General Motors Corp. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-673-9889 |
| Primary Part Number | 12638820 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Cross-Sectional Height | 0.10 INCHES NOMINAL IN |
| Center Hole Diameter | 0.79 INCHES NOMINAL IN |
| Material | RUBBER |
| 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 |
|---|---|
| 12638820 PRIMARY | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 4393851 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
NSN 5331-01-673-9889 is a O-Ring, manufactured by General Motors Corp, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-673-9889 has 1 manufacturer part number on file: 12638820 (General Motors Corp).
Key specifications for 12638820: Cross-Sectional Height: 0.10 INCHES NOMINAL IN; Center Hole Diameter: 0.79 INCHES NOMINAL IN; End Item Identification: 2320-01-653-6516; Material: RUBBER. 3 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.