The O-Ring, cataloged under National Stock Number 5331-01-312-0620, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is William E Williams Valve Corp. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | William E Williams Valve Corp (CAGE 79342) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-312-0620 |
| Primary Part Number | 151F-5-9 6IN |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | William E Williams Valve Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 151F-5-9 6IN PRIMARY | William E Williams Valve Corp (USA) |
| Reference | Meaning |
|---|---|
| 7794 ITEM 9 6IN | C/1 Advisory reference — outside the item-of-supply concept William E Williams Valve Corp |
| 2567 ITEM 12 | C/1 Advisory reference — outside the item-of-supply concept Young and Cunningham America Inc a Joint Venture |
| 2567 ITEM 16 | C/1 Advisory reference — outside the item-of-supply concept Young and Cunningham America Inc a Joint Venture |
| 2567 3/4IN | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5331-01-312-0620 is a O-Ring, manufactured by William E Williams Valve Corp, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-312-0620 has 1 manufacturer part number on file: 151F-5-9 6IN (William E Williams Valve Corp).
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.