The O-Ring, cataloged under National Stock Number 5331-00-820-2690, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is David Brown Hydraulics Inc Dba Hydreco. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-00-820-2690 |
| Primary Part Number | A395X59 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | David Brown Hydraulics Inc Dba Hydreco |
| Status | ACTIVE |
| Cross-Sectional Height | 0.125 INCHES NOMINAL IN |
| Material | RUBBER SYNTHETIC |
| 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 |
|---|---|
| A395X59 PRIMARY | David Brown Hydraulics Inc Dba Hydreco (USA) |
| Reference | Meaning |
|---|---|
| A395X59 | 5/9 Secondary reference General Signal Corp |
| A395X59 | 5/9 Secondary reference Hydreco Inc a Unit of General Signal Corp |
| 474905 | 5/9 Secondary reference Wabco Construction and Mining Equipment Group Indianapolis Plant an American Standard Inc Co |
NSN 5331-00-820-2690 is a O-Ring, manufactured by David Brown Hydraulics Inc Dba Hydreco, classified under FSC 5331, O-ring. Status: active.
NSN 5331-00-820-2690 has 1 manufacturer part number on file: A395X59 (David Brown Hydraulics Inc Dba Hydreco).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-219-0504. Verify interchangeability with system specifications before substitution.
Key specifications for A395X59: Cross-Sectional Height: 0.125 INCHES NOMINAL IN; Material: RUBBER SYNTHETIC. 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.