The O-Ring, cataloged under National Stock Number 5331-01-261-2357, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5331-01-261-2357 |
| Primary Part Number | 2-329C147-7 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Parker-Hannifin Corp Div O-Ring Division |
| Status | CANCELLED |
| Cross-Sectional Height | 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN |
| Outside Diameter | 2.395 INCHES NOMINAL IN |
| Center Hole Diameter | 1.957 INCHES MINIMUM AND 1.993 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 2-329C147-7 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| C147 2-329 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| AS568-329 | 5/9 Secondary reference U.S. Government activity |
| AS568B-329 | 5/9 Secondary reference U.S. Government activity |
| D2000 GRADE M3BC714 | 5/2 Secondary reference U.S. Government activity |
| 6138953-3 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| AS568-329 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-01-261-2357 is a O-Ring, manufactured by Parker-Hannifin Corp Div O-Ring Division, classified under FSC 5331, O-ring. Status: cancelled.
NSN 5331-01-261-2357 has 2 manufacturer part numbers on file: 2-329C147-7 (Parker-Hannifin Corp Div O-Ring Division), C147 2-329 (Parker-Hannifin Corp Div O-Ring Division).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-293-8697. Verify interchangeability with system specifications before substitution.
Key specifications for 2-329C147-7: Cross-Sectional Height: 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM IN; Outside Diameter: 2.395 INCHES NOMINAL IN; Center Hole Diameter: 1.957 INCHES MINIMUM AND 1.993 INCHES MAXIMUM IN. 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.
NSN 5331-01-261-2357 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.