The Stem,needle Valve, cataloged under National Stock Number 4820-01-644-0882, 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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,needle Valve |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-644-0882 |
| Primary Part Number | B12143-1D0 |
| Item Name | Stem,needle Valve |
| 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 |
|---|---|
| B12143-1D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 3423-5001 ITEM 03D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 1970 002 ITEM 03D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 3423-1012-1D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-3423-5001 ITEM 19-3D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-3423-5001 ITEM 19-3D0 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 3423-1012-1 | 5/1 Secondary reference Carleton Technologies Inc Div Tampa Facility |
| 7383858-3423-5001 ITEM 19-3 | 3/1 Design control — primary reference Naval Sea Systems Command |
| H547-0001-3423-5001 ITEM 19-3 | 5/1 Secondary reference U.S. Government activity |
| 3423-1001 ITEM 03D0 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 3423-1001 ITEM 03 | 5/1 Secondary reference Carleton Technologies Inc Div Tampa Facility |
| B12143-1 | 5/1 Secondary reference Mission Systems Orchard Park Inc |
| 3423-5001 ITEM 03 | 5/1 Secondary reference Carleton Technologies Inc Div Tampa Facility |
| 1970 002 ITEM 03 | 5/1 Secondary reference Mission Systems Orchard Park Inc |
NSN 4820-01-644-0882 is a Stem,needle Valve, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-644-0882 has 6 manufacturer part numbers on file: B12143-1D0 (Naval Inventory Control Point Mechanicsburg), 3423-5001 ITEM 03D0 (Naval Inventory Control Point Mechanicsburg), 1970 002 ITEM 03D0 (Naval Inventory Control Point Mechanicsburg), 3423-1012-1D0 (Naval Inventory Control Point Mechanicsburg), 7383858-3423-5001 ITEM 19-3D0 (Naval Inventory Control Point Mechanicsburg) and 1 more.
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-671-4133, 4820-01-733-6002. 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.