The Stem,fluid Valve, cataloged under National Stock Number 4820-01-182-4539, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-182-4539 |
| Primary Part Number | 253342-07 |
| Item Name | Stem,fluid Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Largest Outside Diameter | 2.000 INCHES NOMINAL IN |
| Stem Actuating End Type | THREADED EXTERNALLY |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 253342-07 PRIMARY | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 253342 | 5/9 Secondary reference P J Valves Inc |
| 253342 PC NO 7 | C/1 Advisory reference — outside the item-of-supply concept Huntington Ingalls Inc Div Newport News Shipbuilding |
| 253342 PIECE 7 | 3/9 Design control — primary reference P J Valves Inc |
NSN 4820-01-182-4539 is a Stem,fluid Valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-182-4539 has 1 manufacturer part number on file: 253342-07 (Hunt Valve Company, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 4820-01-182-4588, 4820-01-182-4589, 4820-01-451-3684. Verify interchangeability with system specifications before substitution.
Key specifications for 253342-07: Largest Outside Diameter: 2.000 INCHES NOMINAL IN; Stem Actuating End Type: THREADED EXTERNALLY; Overall Length: 21.625 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING. 3 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.