The Stem,fluid Valve, cataloged under National Stock Number 4820-01-431-6626, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is W S Darley & Co. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4820-01-431-6626 |
| Primary Part Number | 5240003 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | W S Darley & Co |
| Status | ACTIVE |
| Stem Actuating End Type | THREADED INTERNALLY |
| Valve Model Number for Which Designed | A120-3 |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 5240003 PRIMARY | W S Darley & Co (USA) |
| Reference | Meaning |
|---|---|
| B229 REP NO 70 | 5/9 Secondary reference W S Darley & Co |
| A120-3 | 5/9 Secondary reference W S Darley & Co |
NSN 4820-01-431-6626 is a Stem,fluid Valve, manufactured by W S Darley & Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-431-6626 has 1 manufacturer part number on file: 5240003 (W S Darley & Co).
Key specifications for 5240003: Stem Actuating End Type: THREADED INTERNALLY; Valve Model Number for Which Designed: A120-3; End Item Identification: NIMITZ CLASS CVN; Material: COPPER ALLOY. 3 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.