The O-Ring, cataloged under National Stock Number 5331-01-665-3526, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Highland Engineering, Inc.. 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 | Highland Engineering, Inc. (CAGE 0AK83) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-665-3526 |
| Primary Part Number | 506-T&B5262 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Highland Engineering, Inc. |
| 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 |
|---|---|
| 506-T&B5262 PRIMARY | Highland Engineering, Inc. (USA) |
NSN 5331-01-665-3526 is a O-Ring, manufactured by Highland Engineering, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-665-3526 has 1 manufacturer part number on file: 506-T&B5262 (Highland Engineering, Inc.).
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.