The O-Ring, cataloged under National Stock Number 5331-01-138-7111, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Eaton Filtration Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-138-7111 |
| Primary Part Number | ST264Z5B |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Eaton Filtration 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 |
| Part Number | Manufacturer |
|---|---|
| ST264-Z-5-B | Haywardindl. Products, Inc. (USA) |
| ST264Z5B PRIMARY | Eaton Filtration Llc (USA) |
| Reference | Meaning |
|---|---|
| ST264ZSB | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| ST264Z5B | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-138-7111 is a O-Ring, manufactured by Eaton Filtration Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-138-7111 has 2 manufacturer part numbers on file: ST264-Z-5-B (Haywardindl. Products, Inc.), ST264Z5B (Eaton Filtration Llc).
Key specifications for ST264Z5B: End Item Identification: LOGISTICS SUPPORT VESSEL. 0 specifications are documented in the U.S. Government catalog.
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.