The Parts Kit,ball Valve, cataloged under National Stock Number 4820-01-338-2256, 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 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-338-2256 |
| Primary Part Number | 845-4558789 ITEMS 34,18L1 |
| Item Name | Parts Kit,ball Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| End Item Source | 80064 |
| Criticality Code Justification | ZZZY |
| End Item Name | 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 A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 845-4558789 ITEMS 34,18L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 845-4558789 ITEM 17,18 | Naval Inventory Control Point Mechanicsburg (USA) |
| 255582, PIECE 27; 255584, PIECE | Naval Inventory Control Point Mechanicsburg (USA) |
| 2640-800X1-27,2640-801X1-18L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2640-800X1-27,2640-801X1-10L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 255582, PIECE 27; 255584, PIECE | 5/1 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 2640-800X1-27,2640-801X1-18 | 5/1 Secondary reference U.S. Government activity |
| 845-4558789 ITEM 17,18 | 3/1 Design control — primary reference U.S. Government activity |
| 2640-800X1-27,2640-801X1-10 | 5/1 Secondary reference U.S. Government activity |
| 845-4558789 ITEMS 34,18 | 5/1 Secondary reference U.S. Government activity |
NSN 4820-01-338-2256 is a Parts Kit,ball Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-338-2256 has 5 manufacturer part numbers on file: 845-4558789 ITEMS 34,18L1 (Naval Inventory Control Point Mechanicsburg), 845-4558789 ITEM 17,18 (Naval Inventory Control Point Mechanicsburg), 255582, PIECE 27; 255584, PIECE (Naval Inventory Control Point Mechanicsburg), 2640-800X1-27,2640-801X1-18L1 (Naval Inventory Control Point Mechanicsburg), 2640-800X1-27,2640-801X1-10L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 845-4558789 ITEMS 34,18L1: End Item Source: 80064; Criticality Code Justification: ZZZY; End Item Name: BALL VALVE; End Item Identification: 4558789. 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.
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.