The Stem,fluid Valve, cataloged under National Stock Number 4810-01-485-8500, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Seyer Industries, Inc. Dba Seyer Industries Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-01-485-8500 |
| Primary Part Number | SI4394203-205 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Seyer Industries, Inc. Dba Seyer Industries Inc |
| 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 |
|---|---|
| SI4394203-205 PRIMARY | Seyer Industries, Inc. Dba Seyer Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| SI4394202-201 | D/9 Drawing number reference only Seyer Industries, Inc. Dba Seyer Industries Inc |
NSN 4810-01-485-8500 is a Stem,fluid Valve, manufactured by Seyer Industries, Inc. Dba Seyer Industries Inc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-485-8500 has 1 manufacturer part number on file: SI4394203-205 (Seyer Industries, Inc. Dba Seyer Industries Inc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-486-5203. Verify interchangeability with system specifications before substitution.
Key specifications for SI4394203-205: Special Features: NHA PUMP ASSEMBLY, AXLE JACK, P/N SI4394202-201; End Item Identification: E/I AIRCRAFT LANDING GEAR JACK; W/S CONSOLIDATED GROUND SUPPORT EQUIPMENT. 0 specifications are documented in the U.S. Government catalog.
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.