The Stem,fluid Valve, cataloged under National Stock Number 4810-01-476-3889, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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,fluid Valve |
| FSC / FSG | 4810 — Valves, Powered (FSG 48) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711); Chadwick Optical, Inc. Dba Helix Precision Machine Div Helix Precision Machine (CAGE 9A8Y4) |
| Parameter | Value |
|---|---|
| NSN | 4810-01-476-3889 |
| Primary Part Number | 845-7286651 ITEM 37 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| 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 |
|---|---|
| 845-7286651 ITEM 37 PRIMARY | Naval Sea Systems Command (USA) |
| 845-7286651 ITEM 37 REV D | Chadwick Optical, Inc. Dba Helix Precision Machine Div Helix Precision Machine (USA) |
| Reference | Meaning |
|---|---|
| 7286651 | D/9 Drawing number reference only Naval Sea Systems Command |
| 2643-825-91 ITEM 37 | 5/2 Secondary reference U.S. Government activity |
| 2643-825-91 | D/9 Drawing number reference only U.S. Government activity |
NSN 4810-01-476-3889 is a Stem,fluid Valve, manufactured by Naval Sea Systems Command, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-476-3889 has 2 manufacturer part numbers on file: 845-7286651 ITEM 37 (Naval Sea Systems Command), 845-7286651 ITEM 37 REV D (Chadwick Optical, Inc. Dba Helix Precision Machine Div Helix Precision Machine).
5 possible matches (shared part number, not a government interchangeability claim): 4730-01-476-4166, 3040-01-483-4568, 5365-01-668-6565. 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.