The O-Ring, cataloged under National Stock Number 5331-01-628-8751, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Cleveland Gear Company, Inc. Dba Cleveland Gear Co. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Cleveland Gear Company, Inc. Dba Cleveland Gear Co (CAGE 59958) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-628-8751 |
| Primary Part Number | Z1057AU |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Cleveland Gear Company, Inc. Dba Cleveland Gear Co |
| 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 |
|---|---|
| Z1057AU PRIMARY | Cleveland Gear Company, Inc. Dba Cleveland Gear Co (USA) |
| Reference | Meaning |
|---|---|
| 060DH2-211ITEM19 | C/1 Advisory reference — outside the item-of-supply concept Cleveland Gear Company, Inc. Dba Cleveland Gear Co |
NSN 5331-01-628-8751 is a O-Ring, manufactured by Cleveland Gear Company, Inc. Dba Cleveland Gear Co, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-628-8751 has 1 manufacturer part number on file: Z1057AU (Cleveland Gear Company, Inc. Dba Cleveland Gear Co).
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.