The O-Ring, cataloged under National Stock Number 5331-01-619-4778, 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 2 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 5331-01-619-4778 |
| Primary Part Number | ISO3601-140X3.55 |
| 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 | 140.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 521321 | Hydrema U.s., Inc. Dba Hydrema Us Inc (USA) |
| ISO3601-140X3.55 PRIMARY | International Organization for Standardization (iso) (CHE) |
| 2027590 POS 57 | County Delivery All (USA) |
| Reference | Meaning |
|---|---|
| 2098600-D | D/9 Drawing number reference only Hydrema U.s., Inc. Dba Hydrema Us Inc |
NSN 5331-01-619-4778 is a O-Ring, manufactured by International Organization for Standardization (iso), classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-619-4778 has 3 manufacturer part numbers on file: 521321 (Hydrema U.s., Inc. Dba Hydrema Us Inc), ISO3601-140X3.55 (International Organization for Standardization (iso)), 2027590 POS 57 (County Delivery All).
Key specifications for ISO3601-140X3.55: Cross-Sectional Height: 3.55 MILLIMETERS NOMINAL MM; Center Hole Diameter: 140.0 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: 140X3.55 O-RING IAW ISO3601; End Item Identification: 2355-22-622-7966. 2 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.