The Seat,valve, cataloged under National Stock Number 4820-01-359-0611, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allied Enterprises, Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4820-01-359-0611 |
| Primary Part Number | 1AA-18-004 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Allied Enterprises, 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 |
|---|---|
| 1AA-18-004 PRIMARY | Allied Enterprises, Inc. (USA) |
| 44881 | Allied Enterprises, Inc. (USA) |
NSN 4820-01-359-0611 is a Seat,valve, manufactured by Allied Enterprises, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-359-0611 has 2 manufacturer part numbers on file: 1AA-18-004 (Allied Enterprises, Inc.), 44881 (Allied Enterprises, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-374-5160. Verify interchangeability with system specifications before substitution.
Key specifications for 1AA-18-004: End Item Identification: ALLIED ENTERPRISES SF PLUNGER PUMP MODEL 2SF20. 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.