The Cartridge Assembly, cataloged under National Stock Number 4820-01-233-6840, 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 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-233-6840 |
| Primary Part Number | S-529 ITEM 103VM |
| Item Name | Cartridge Assembly |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Reference Number Differentiating Characteristics | MAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S-529 ITEM 103VM | Naval Inventory Control Point Mechanicsburg (USA) |
| W-MG25K10-40/5S0481 BM190397VM | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| S-529 ITEM 103 | 5/9 Secondary reference Metso Minerals Industries, Inc. Dba Bulk Material Handling |
| W-MG25K10-40/5S0481 BM190397 | 3/1 Design control — primary reference Bosch Rexroth Corporation Div Industrial Hydraulics |
NSN 4820-01-233-6840 is a Cartridge Assembly, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-233-6840 has 2 manufacturer part numbers on file: S-529 ITEM 103VM (Naval Inventory Control Point Mechanicsburg), W-MG25K10-40/5S0481 BM190397VM (Naval Inventory Control Point Mechanicsburg).
Key specifications for S-529 ITEM 103VM: Reference Number Differentiating Characteristics: MAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION. 1 specification is 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.