The O-Ring, cataloged under National Stock Number 5331-01-641-8564, 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 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | International Organization for Standardization (iso) (CAGE I9008); Hydrema U.s., Inc. Dba Hydrema Us Inc (CAGE 5PFF0); A/s Hydrema Export Dba A/s Hydrostar (CAGE R2723) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-641-8564 |
| Primary Part Number | ISO3601-14X1.78 |
| 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 |
|---|---|
| ISO3601-14X1.78 PRIMARY | International Organization for Standardization (iso) (CHE) |
| 7500057 PRIMARY | Hydrema U.s., Inc. Dba Hydrema Us Inc (USA) |
| 7500057 | A/s Hydrema Export Dba A/s Hydrostar (DNK) |
NSN 5331-01-641-8564 is a O-Ring, manufactured by International Organization for Standardization (iso), classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-641-8564 has 3 manufacturer part numbers on file: ISO3601-14X1.78 (International Organization for Standardization (iso)), 7500057 (Hydrema U.s., Inc. Dba Hydrema Us Inc), 7500057 (A/s Hydrema Export Dba A/s Hydrostar).
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.