The Stem,fluid Valve, cataloged under National Stock Number 4820-01-549-9742, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Ernst, John C & Co, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-549-9742 |
| Primary Part Number | E41500 KEY 47 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Ernst, John C & Co, 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 |
|---|---|
| E41500 KEY 47 PRIMARY | Ernst, John C & Co, Inc. (USA) |
| Reference | Meaning |
|---|---|
| E41500 | D/9 Drawing number reference only Ernst, John C & Co, Inc. |
NSN 4820-01-549-9742 is a Stem,fluid Valve, manufactured by Ernst, John C & Co, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-549-9742 has 1 manufacturer part number on file: E41500 KEY 47 (Ernst, John C & Co, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-550-2821. Verify interchangeability with system specifications before substitution.
Key specifications for E41500 KEY 47: Special Features: PART NAME ASSIGNED BY CONTROLLING AGENCY IS, DRAIN VALVE STEM; End Item Identification: LIQUID LEVEL GAUGE. 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.