The O-Ring, cataloged under National Stock Number 5331-01-265-2126, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hyster-Yale Group, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Hyster-Yale Group, Inc. (CAGE 30076); Kyb Corporation (CAGE J1620) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-265-2126 |
| Primary Part Number | 321977 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hyster-Yale Group, 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 |
|---|---|
| 321977 PRIMARY | Hyster-Yale Group, Inc. (USA) |
| 21001-00514-0 | Kyb Corporation (JPN) |
| Reference | Meaning |
|---|---|
| 21001-00514-0 | 5/9 Secondary reference Kayaba Industry Co. Ltd |
NSN 5331-01-265-2126 is a O-Ring, manufactured by Hyster-Yale Group, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-265-2126 has 2 manufacturer part numbers on file: 321977 (Hyster-Yale Group, Inc.), 21001-00514-0 (Kyb Corporation).
1 possible match (shared part number, not a government interchangeability claim): 2915-01-297-8351. Verify interchangeability with system specifications before substitution.
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.