The O-Ring, cataloged under National Stock Number 5331-01-720-7312, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-720-7312 |
| Primary Part Number | AS3581-215VS |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| AS3581-215VS | Naval Inventory Control Point Mechanicsburg (USA) |
| 8758871 / FIND 16VS | Naval Inventory Control Point Mechanicsburg (USA) |
| 8758871-16VS | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 8758871-16 | 3/1 Design control — primary reference Naval Sea Systems Command |
| AS3581-215 | 5/1 Secondary reference Sae International Dba Sae International |
| 8758871 | D/9 Drawing number reference only Naval Sea Systems Command |
| 8758871 / FIND 16 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5331-01-720-7312 is a O-Ring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-720-7312 has 3 manufacturer part numbers on file: AS3581-215VS (Naval Inventory Control Point Mechanicsburg), 8758871 / FIND 16VS (Naval Inventory Control Point Mechanicsburg), 8758871-16VS (Naval Inventory Control Point Mechanicsburg).
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.