The Stem,fluid Valve, cataloged under National Stock Number 4820-01-421-2584, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Walworth Company. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-421-2584 |
| Primary Part Number | 600485 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Stem Actuating End Type | THREADED INTERNALLY |
| Valve Model Number for Which Designed | 5275F |
| Valve Size for Which Designed | 4.000 INCHES IN |
| Material | STEEL |
| 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 |
|---|---|
| WALWORTH 5275F 4.00IN IT6 | Valve Automation and Control of San Diego Dba Valve Automation & Control of San Diego Div Valve Automation and Controls of (USA) |
| 5275F 4.00IN IT6 | The Walworth Company (USA) |
| 600485 PRIMARY | The Walworth Company (USA) |
NSN 4820-01-421-2584 is a Stem,fluid Valve, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-2584 has 3 manufacturer part numbers on file: WALWORTH 5275F 4.00IN IT6 (Valve Automation and Control of San Diego Dba Valve Automation & Control of San Diego Div Valve Automation and Controls of), 5275F 4.00IN IT6 (The Walworth Company), 600485 (The Walworth Company).
2 possible matches (shared part number, not a government interchangeability claim): 1660-01-472-6048, 5935-01-591-5888. Verify interchangeability with system specifications before substitution.
Key specifications for 600485: Valve Type for Which Designed: GLOBE; Stem Actuating End Type: THREADED INTERNALLY; Valve Model Number for Which Designed: 5275F; Valve Size for Which Designed: 4.000 INCHES IN. 5 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.