The Piston,valve, cataloged under National Stock Number 4820-01-549-9262, 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 2 specifications, cited from the U.S. Government catalog. The record lists 9 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-549-9262 |
| Primary Part Number | V3D10431 ITEM 6D0 |
| Item Name | Piston,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROLLED IAW NAVY LEVEL1 ASSURANCE GUIDE, CLEANED IAW MIL-C- 52211 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| V3D10431 ITEM 6D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-V3D10431-6D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| V2C13703-1D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| V3D10431-6D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-V3D10506-6D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| V3D10506-6D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-V3D10431-6D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| V3D10506 ITEM 6D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-V3D10506-6D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| V3D10431 ITEM 6 | 5/1 Secondary reference U.S. Government activity |
| V3D10506-6 | 5/1 Secondary reference U.S. Government activity |
| G547-0002-V3D10506-6 | 5/1 Secondary reference U.S. Government activity |
| 7550478-V3D10506-6 | 3/1 Design control — primary reference Naval Sea Systems Command |
| V3D10431-6 | 5/1 Secondary reference U.S. Government activity |
| V3D10506 ITEM 6 | 5/1 Secondary reference U.S. Government activity |
| V2C13703-1 | 5/1 Secondary reference U.S. Government activity |
| G547-0002-V3D10431-6 | 5/1 Secondary reference U.S. Government activity |
| 7550478-V3D10431-6 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4820-01-549-9262 is a Piston,valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-549-9262 has 9 manufacturer part numbers on file: V3D10431 ITEM 6D0 (Naval Inventory Control Point Mechanicsburg), 7550478-V3D10431-6D0 (Naval Inventory Control Point Mechanicsburg), V2C13703-1D0 (Naval Inventory Control Point Mechanicsburg), V3D10431-6D0 (Naval Inventory Control Point Mechanicsburg), G547-0002-V3D10506-6D0 (Naval Inventory Control Point Mechanicsburg) and 4 more.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-634-0265. Verify interchangeability with system specifications before substitution.
Key specifications for V3D10431 ITEM 6D0: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: QUALITY CONTROLLED IAW NAVY LEVEL1 ASSURANCE GUIDE, CLEANED IAW MIL-C- 52211. 2 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 4820-01-549-9262 has DEMIL Code Q. 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.