The O-Ring, cataloged under National Stock Number 5331-01-601-4585, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Onboard Systems International, Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Onboard Systems International, Llc (CAGE 1Y921) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-601-4585 |
| Primary Part Number | 556-028-00 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Onboard Systems International, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 556-028-00 PRIMARY | Onboard Systems International, Llc (USA) |
NSN 5331-01-601-4585 is a O-Ring, manufactured by Onboard Systems International, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-601-4585 has 1 manufacturer part number on file: 556-028-00 (Onboard Systems International, Llc).
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.