The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-321-2587, 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 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-321-2587 |
| Primary Part Number | 256348PIECE 7 AND 40L1 |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| End Item Source | 43689 |
| Criticality Code Justification | ZZZY |
| End Item Name | COMBINATION HULL AND BACK-UP BALL VALVE |
| Reference Number Differentiating Characteristics | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| 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 |
|---|---|
| 256348PIECE 7 AND 40L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 255583PC56AND255584PC14L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 255583PC56AND255584PC14 | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 256348PIECE 7 AND 40 | 3/1 Design control — primary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 4820-01-321-2587 is a Parts Kit,ball Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-321-2587 has 2 manufacturer part numbers on file: 256348PIECE 7 AND 40L1 (Naval Inventory Control Point Mechanicsburg), 255583PC56AND255584PC14L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 256348PIECE 7 AND 40L1: End Item Source: 43689; Criticality Code Justification: ZZZY; End Item Name: COMBINATION HULL AND BACK-UP BALL VALVE; End Item Identification: 256348. 4 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 4820-01-321-2587 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.