The Stem,drive, cataloged under National Stock Number 4820-01-633-8057, 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 5 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Stem,drive |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-633-8057 |
| Primary Part Number | 3423-5001 ITEM 04D0 |
| Item Name | Stem,drive |
| 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 |
|---|---|
| 3423-5001 ITEM 04D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 1970 002 ITEM 04D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-3423-5001 ITEM 19-4D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 1970 502 007-1D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-3423-5001 ITEM 19-4D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 1970 502 007-1 | 5/1 Secondary reference Mission Systems Orchard Park Inc |
| 3423-5001 ITEM 04 | 5/1 Secondary reference Carleton Technologies Inc Div Tampa Facility |
| 1970 502 007-1 | 5/1 Secondary reference Carleton Technologies Inc Div Tampa Facility |
| 1970 002 ITEM 04 | 5/1 Secondary reference Carleton Technologies Inc Div Tampa Facility |
| 7383858-3423-5001 ITEM 19-4 | 5/1 Secondary reference Naval Sea Systems Command |
| H547-0001-3423-5001 ITEM 19-4 | 5/1 Secondary reference U.S. Government activity |
| 1970 002 ITEM 04 | 3/1 Design control — primary reference Mission Systems Orchard Park Inc |
NSN 4820-01-633-8057 is a Stem,drive, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-633-8057 has 5 manufacturer part numbers on file: 3423-5001 ITEM 04D0 (Naval Inventory Control Point Mechanicsburg), 1970 002 ITEM 04D0 (Naval Inventory Control Point Mechanicsburg), 7383858-3423-5001 ITEM 19-4D0 (Naval Inventory Control Point Mechanicsburg), 1970 502 007-1D0 (Naval Inventory Control Point Mechanicsburg), H547-0001-3423-5001 ITEM 19-4D0 (Naval Inventory Control Point Mechanicsburg).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-671-4128, 4820-01-677-5796. Verify interchangeability with system specifications before substitution.
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.