The Stem,fluid Valve, cataloged under National Stock Number 4820-01-386-7411, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-386-7411 |
| Primary Part Number | SS845-2181284 PC3 1/2INSS |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Valve Type for Which Designed | GLOBE |
| Largest Outside Diameter | 0.560 INCHES NOMINAL IN |
| Stem Actuating End Type | THREADED EXTERNALLY AND SQUARE |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | ASTM B164 ASSN STD SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 0.500 INCHES IN |
| Material | COPPER ALLOY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUBSAFE ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| SS845-2181284 PC3 1/2INSS | Naval Inventory Control Point Mechanicsburg (USA) |
| 2181284 PC3 1/2INSS | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-2181284 PC3 1/2INSS | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 2181284 PC3 1/2IN | 5/1 Secondary reference U.S. Government activity |
| SS845-2181284 PC3 1/2IN | 3/1 Design control — primary reference U.S. Government activity |
NSN 4820-01-386-7411 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-386-7411 has 3 manufacturer part numbers on file: SS845-2181284 PC3 1/2INSS (Naval Inventory Control Point Mechanicsburg), 2181284 PC3 1/2INSS (Naval Inventory Control Point Mechanicsburg), 845-2181284 PC3 1/2INSS (Naval Inventory Control Point Mechanicsburg).
Key specifications for SS845-2181284 PC3 1/2INSS: Valve Type for Which Designed: GLOBE; Largest Outside Diameter: 0.560 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY AND SQUARE; Criticality Code Justification: ZZZY. 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.
NSN 4820-01-386-7411 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.