The Stem,fluid Valve, cataloged under National Stock Number 4820-01-414-0404, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Acme Products & Engineering Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Acme Products & Engineering Inc (CAGE 1T943) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-414-0404 |
| Primary Part Number | 644A2-AP |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Acme Products & Engineering 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 |
|---|---|
| 644A2-AP PRIMARY | Acme Products & Engineering Inc (USA) |
| Reference | Meaning |
|---|---|
| 644-A2 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
| 60-1059PCS403,405,&425 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
| 60-1059 | D/9 Drawing number reference only Hardie-Tynes Co., Inc. |
NSN 4820-01-414-0404 is a Stem,fluid Valve, manufactured by Acme Products & Engineering Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-414-0404 has 1 manufacturer part number on file: 644A2-AP (Acme Products & Engineering Inc).
4 possible matches (shared part number, not a government interchangeability claim): 3020-01-414-2292, 3020-01-414-2299, 4820-01-415-3171. 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.