The O-Ring, cataloged under National Stock Number 5331-01-520-5403, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Johnson Controls Navy Systems, Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-520-5403 |
| Primary Part Number | 028-08012-000 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Johnson Controls Navy Systems, Llc |
| 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 |
|---|---|
| 028 0812 000 | Johnson Controls Ltd, York Navy Systems (GBR) |
| 028-08012-000 PRIMARY | Johnson Controls Navy Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 028-08012 | 5/9 Secondary reference Johnson Controls Navy Systems, Llc |
NSN 5331-01-520-5403 is a O-Ring, manufactured by Johnson Controls Navy Systems, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-520-5403 has 2 manufacturer part numbers on file: 028 0812 000 (Johnson Controls Ltd, York Navy Systems), 028-08012-000 (Johnson Controls Navy Systems, Llc).
Key specifications for 028-08012-000: End Item Identification: WATER CHILLER PLANT, Y MODELS. 0 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.