The O-Ring, cataloged under National Stock Number 5331-01-420-1631, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Bonney Forge Valve. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Bonney Forge Valve (CAGE 4V609) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-420-1631 |
| Primary Part Number | 1/4-HL-31-SW ITEM 12 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Bonney Forge Valve |
| 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 |
|---|---|
| 1/4-HL-31-SW ITEM 12 PRIMARY | Bonney Forge Valve (USA) |
| Reference | Meaning |
|---|---|
| BONNEY FG HL-31 SW 0.25IN IT12 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| BONNEY FG 1/4-HL-31-SW ITEM 12 | 5/9 Secondary reference Valve Automation and Control of San Diego Dba Valve Automation & Control of San Diego Div Valve Automation and Controls of |
NSN 5331-01-420-1631 is a O-Ring, manufactured by Bonney Forge Valve, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-420-1631 has 1 manufacturer part number on file: 1/4-HL-31-SW ITEM 12 (Bonney Forge Valve).
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.