The O-Ring, cataloged under National Stock Number 5331-01-620-7780, 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). Government technical data includes 3 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-620-7780 |
| Primary Part Number | ISO3601-46.2X3.55 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | International Organization for Standardization (iso) |
| Status | ACTIVE |
| Cross-Sectional Height | 3.55 MILLIMETERS NOMINAL MM |
| Center Hole Diameter | 46.2 MILLIMETERS NOMINAL MM |
| Material | PLASTIC |
| 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 |
|---|---|
| 521313 | A/s Hydrema Export Dba A/s Hydrostar (DNK) |
| ISO3601-46.2X3.55 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 5331-01-620-7780 is a O-Ring, manufactured by International Organization for Standardization (iso), classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-620-7780 has 2 manufacturer part numbers on file: 521313 (A/s Hydrema Export Dba A/s Hydrostar), ISO3601-46.2X3.55 (International Organization for Standardization (iso)).
2 possible matches (shared part number, not a government interchangeability claim): 5331-01-641-4896, 5331-01-646-6762. Verify interchangeability with system specifications before substitution.
Key specifications for ISO3601-46.2X3.55: Cross-Sectional Height: 3.55 MILLIMETERS NOMINAL MM; Center Hole Diameter: 46.2 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: O-RING; Material: PLASTIC. 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.