The Valve,plug, cataloged under National Stock Number 4820-01-643-0904, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,plug |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-643-0904 |
| Primary Part Number | H547-0001-A51D4 |
| Item Name | Valve,plug |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| 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 |
|---|---|
| H547-0001-A51D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 2640-599 ASSY AD4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-7108111-43D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| H5470001-H5471721-43D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 167-7108111-43D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-A51D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 11-NS-0077D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| H547-0001-A51 | 5/1 Secondary reference U.S. Government activity |
| 2640-599 ASSY A | 3/1 Design control — primary reference U.S. Government activity |
| H5470001-H5471721-43 | 5/1 Secondary reference U.S. Government activity |
| 7383858-A51 | 5/1 Secondary reference Naval Sea Systems Command |
| 167-7108111-43 | 5/1 Secondary reference Naval Sea Systems Command |
| 11-NS-0077 | 5/2 Secondary reference U.S. Government activity |
| 7383858-7108111-43 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4820-01-643-0904 is a Valve,plug, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-643-0904 has 7 manufacturer part numbers on file: H547-0001-A51D4 (Naval Inventory Control Point Mechanicsburg), 2640-599 ASSY AD4 (Naval Inventory Control Point Mechanicsburg), 7383858-7108111-43D4 (Naval Inventory Control Point Mechanicsburg), H5470001-H5471721-43D4 (Naval Inventory Control Point Mechanicsburg), 167-7108111-43D4 (Naval Inventory Control Point Mechanicsburg) and 2 more.
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.