The O-Ring, cataloged under National Stock Number 5331-01-031-8271, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corp Div O-Ring Division. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-031-8271 |
| Primary Part Number | 2502774-29 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | ACTIVE |
| Cross-Sectional Height | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Center Hole Diameter | 1.854 INCHES MINIMUM AND 1.884 INCHES MAXIMUM IN |
| Material | RUBBER ETHYLENE-PROPYLENE CLASS EPM |
| 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 |
|---|---|
| 2502774-29 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| 2502774-29 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 2502774-29 | Parker Brownsville Servicio S.a. De C.v. (MEX) |
| Reference | Meaning |
|---|---|
| 2502774-29 | 5/9 Secondary reference Naval Sea Systems Command |
| 2502774 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 2-032 E0540-80 1W2B | 5/9 Secondary reference Parker-Hannifin Corp Div O-Ring Division |
NSN 5331-01-031-8271 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-031-8271 has 3 manufacturer part numbers on file: 2502774-29 (Parker-Hannifin Corp Div O-Ring Division), 2502774-29 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 2502774-29 (Parker Brownsville Servicio S.a. De C.v.).
Key specifications for 2502774-29: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Center Hole Diameter: 1.854 INCHES MINIMUM AND 1.884 INCHES MAXIMUM IN; Part Name Assigned by Controlling Agency: O-RING; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM. 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.