The O-Ring, cataloged under National Stock Number 5331-01-237-7661, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Sae International Dba Sae International (CAGE 0U583); Parker-Hannifin Corp Div O-Ring Division (CAGE 02697) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-237-7661 |
| Primary Part Number | AS3581-356 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| 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 |
|---|---|
| AS3581-356 PRIMARY | Sae International Dba Sae International (USA) |
| 2-356V894-90 PRIMARY | Parker-Hannifin Corp Div O-Ring Division (USA) |
| Reference | Meaning |
|---|---|
| M83248/2-356 | 5/9 Secondary reference U.S. Government activity |
| AMS7259 | 5/9 Secondary reference U.S. Government activity |
| AS3581-356 | 5/9 Secondary reference U.S. Government activity |
| MIL-R-83248/2 | 5/9 Secondary reference U.S. Government activity |
| SAE-AS3581 | 3/1 Design control — primary reference Sae International Dba Sae International |
| AMS7259 | 5/9 Secondary reference Sae International Dba Sae International |
| M83248)2-356 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-237-7661 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-237-7661 has 2 manufacturer part numbers on file: AS3581-356 (Sae International Dba Sae International), 2-356V894-90 (Parker-Hannifin Corp Div O-Ring Division).
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.