The Stem,fluid Valve, cataloged under National Stock Number 4820-01-522-4054, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 8 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. 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 | 4820-01-522-4054 |
| Primary Part Number | 6397304-1X-02,-05 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 DISK |
| Valve Type for Which Designed | GLOBE |
| Largest Outside Diameter | 0.438 INCHES NOMINAL IN |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Valve Model Number for Which Designed | ASSEMBY A OR B, CLASS 1 (CRES) |
| Material Document and Classification | AMS 5648 TY 316 ASSN STD SINGLE MATERIAL RESPONSE AND MIL-P-46183, TY 3 CL 2 (CARBON FIBER REINFORCED PLASTIC) MIL SPEC SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 0.250 INCHES IN |
| Material | STEEL CORROSION RESISTING AND PLASTIC |
| 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 |
|---|---|
| 6397304-1X-02,-05 PRIMARY | Naval Sea Systems Command (USA) |
| 803-6397304-1A-02,-05 | Naval Sea Systems Command (USA) |
NSN 4820-01-522-4054 is a Stem,fluid Valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-522-4054 has 2 manufacturer part numbers on file: 6397304-1X-02,-05 (Naval Sea Systems Command), 803-6397304-1A-02,-05 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-546-7933, 4820-01-546-9214. Verify interchangeability with system specifications before substitution.
Key specifications for 6397304-1X-02,-05: Furnished Items and Quantity: 1 DISK; Valve Type for Which Designed: GLOBE; Largest Outside Diameter: 0.438 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY. 8 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.