The Stem,fluid Valve, cataloged under National Stock Number 4820-01-366-9593, 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 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-366-9593 |
| Primary Part Number | 4384539 PC 112Q3 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE |
| Valve Size for Which Designed | 12.000 INCHES IN |
| Material | NICKEL ALLOY |
| Reference Number Differentiating Characteristics | ITEMS THAT SUPPORT A LEVEL I OR SUBSAFE CRITICAL SYSTEM/COMPONENT THAT HAS UNDERGONE QUALITY ASSURANCE DURING THE ACQUISITION PROCESS AND REQUIRES OBJECTIVE QUALITY EVIDENCE (OQE) TRACEABLE TO PERMANENT MARKING ON THE MATERIAL |
| 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 |
|---|---|
| 4384539 PC 112Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 803-4384539 PIECE 112Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| 803-4384539-X-112Q3 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 4384539 PC 112 | 5/1 Secondary reference U.S. Government activity |
| 803-4384539-X-112 | 5/1 Secondary reference U.S. Government activity |
| 803-4384539 PIECE 112 | 3/1 Design control — primary reference U.S. Government activity |
NSN 4820-01-366-9593 is a Stem,fluid Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-366-9593 has 3 manufacturer part numbers on file: 4384539 PC 112Q3 (Naval Inventory Control Point Mechanicsburg), 803-4384539 PIECE 112Q3 (Naval Inventory Control Point Mechanicsburg), 803-4384539-X-112Q3 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 4384539 PC 112Q3: Criticality Code Justification: ZZZY; Material Document and Classification: QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE; Overall Length: 16.125 INCHES NOMINAL IN; Valve Size for Which Designed: 12.000 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.
NSN 4820-01-366-9593 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.