The O-Ring, cataloged under National Stock Number 5331-01-647-5589, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5331-01-647-5589 |
| Primary Part Number | D40-0001 ITEM 4 CP |
| 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 |
|---|---|
| D40-0001 ITEM 4 CP | Naval Inventory Control Point Mechanicsburg (USA) |
| AS568-019T CP | Naval Inventory Control Point Mechanicsburg (USA) |
| AS568-019AMS3660 CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| AS568-019T | 5/1 Secondary reference Dante Valve Company |
| D40-0001 ITEM 4 | 5/1 Secondary reference Dante Valve Company |
| AS568-019AMS3660 | 3/9 Design control — primary reference U.S. Government activity |
| AS568-019AMS3660 | 3/1 Design control — primary reference Sae International Dba Sae International |
NSN 5331-01-647-5589 is a O-Ring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-647-5589 has 3 manufacturer part numbers on file: D40-0001 ITEM 4 CP (Naval Inventory Control Point Mechanicsburg), AS568-019T CP (Naval Inventory Control Point Mechanicsburg), AS568-019AMS3660 CP (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.