The Guide,valve Stem, cataloged under National Stock Number 4820-01-643-6121, 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 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-643-6121 |
| Primary Part Number | 803-6397434-X41XXX-024D4 |
| Item Name | Guide,valve Stem |
| 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 |
|---|---|
| 803-6397434-X41XXX-024D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-6397434-4-024D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-6397434-4-024D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-6397434-4-024D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| 6397434-4-024D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-6397434-4-024D4 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| H547-0001-6397434-4-024 | 5/1 Secondary reference U.S. Government activity |
| 7550478-6397434-4-024 | 5/1 Secondary reference Naval Sea Systems Command |
| 7383858-6397434-4-024 | 5/1 Secondary reference Naval Sea Systems Command |
| 6397434-4-024 | 3/1 Design control — primary reference U.S. Government activity |
| G547-0002-6397434-4-024 | 5/1 Secondary reference U.S. Government activity |
| 803-6397434-X41XXX-024 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 4820-01-643-6121 is a Guide,valve Stem, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-643-6121 has 6 manufacturer part numbers on file: 803-6397434-X41XXX-024D4 (Naval Inventory Control Point Mechanicsburg), 7550478-6397434-4-024D4 (Naval Inventory Control Point Mechanicsburg), 7383858-6397434-4-024D4 (Naval Inventory Control Point Mechanicsburg), G547-0002-6397434-4-024D4 (Naval Inventory Control Point Mechanicsburg), 6397434-4-024D4 (Naval Inventory Control Point Mechanicsburg) and 1 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.