The O-Ring, cataloged under National Stock Number 5331-01-646-6762, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is International Organization for Standardization (iso). The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | A/s Hydrema Export Dba A/s Hydrostar (CAGE R2723); International Organization for Standardization (iso) (CAGE I9008) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-646-6762 |
| Primary Part Number | ISO3601-12X2,5 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | International Organization for Standardization (iso) |
| 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 |
|---|---|
| 521201 | A/s Hydrema Export Dba A/s Hydrostar (DNK) |
| ISO3601-12X2,5 PRIMARY | International Organization for Standardization (iso) (CHE) |
| Reference | Meaning |
|---|---|
| 2098600 | 7/2 Vendor item drawing reference Hydrema U.s., Inc. Dba Hydrema Us Inc |
NSN 5331-01-646-6762 is a O-Ring, manufactured by International Organization for Standardization (iso), classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-646-6762 has 2 manufacturer part numbers on file: 521201 (A/s Hydrema Export Dba A/s Hydrostar), ISO3601-12X2,5 (International Organization for Standardization (iso)).
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.