The O-Ring, cataloged under National Stock Number 5331-01-727-7574, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Koss Corporation Dba Koss Holdings Llc. The record lists 3 manufacturer part numbers 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 | Koss Corporation Dba Koss Holdings Llc (CAGE 50333); Smiths Detection Inc. Dba Smiths Detection Inc Casc (CAGE 23667); Mcmaster-Carr Supply Company (CAGE 2V507) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-727-7574 |
| Primary Part Number | 027 BUNA |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Koss Corporation Dba Koss Holdings 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 |
NSN 5331-01-727-7574 is a O-Ring, manufactured by Koss Corporation Dba Koss Holdings Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-727-7574 has 3 manufacturer part numbers on file: 027 BUNA (Koss Corporation Dba Koss Holdings Llc), 3012688 (Smiths Detection Inc. Dba Smiths Detection Inc Casc), 2418T129 (Mcmaster-Carr Supply Company).
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.