The Retainer,nut,valve, cataloged under National Stock Number 4820-01-440-2550, 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 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-440-2550 |
| Primary Part Number | 5202-2 PN15 8IN. |
| Item Name | Retainer,nut,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Walworth Company |
| Status | ACTIVE |
| General Characteristics Item Description | FOR CAP(YOKE); USED ON 8IN. VALVE,GATE IN |
| Pressure Rating | ERR-060 |
| 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 |
|---|---|
| 5202-2 PN15 8IN. | Valve Automation and Control of San Diego Dba Valve Automation & Control of San Diego Div Valve Automation and Controls of (USA) |
| 5202-2 PN15 8IN. PRIMARY | The Walworth Company (USA) |
NSN 4820-01-440-2550 is a Retainer,nut,valve, manufactured by The Walworth Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-440-2550 has 2 manufacturer part numbers on file: 5202-2 PN15 8IN. (Valve Automation and Control of San Diego Dba Valve Automation & Control of San Diego Div Valve Automation and Controls of), 5202-2 PN15 8IN. (The Walworth Company).
Key specifications for 5202-2 PN15 8IN.: General Characteristics Item Description: FOR CAP(YOKE); USED ON 8IN. VALVE,GATE IN; Pressure Rating: ERR-060; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: STEEL. 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.