The Valve,safety Relief, cataloged under National Stock Number 4820-00-346-3425, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hatch & Kirk, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Hatch & Kirk, Inc. (CAGE 55380) |
| Parameter | Value |
|---|---|
| NSN | 4820-00-346-3425 |
| Primary Part Number | 3252074 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 3252074 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3252074 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
| 81158S4105-1010597 | 5/2 Secondary reference U.S. Government activity |
| 81158S4105-10105H75CDA61788 | 5/2 Secondary reference U.S. Government activity |
NSN 4820-00-346-3425 is a Valve,safety Relief, manufactured by Hatch & Kirk, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-346-3425 has 1 manufacturer part number on file: 3252074 (Hatch & Kirk, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-243-4052. 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.
NSN 4820-00-346-3425 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.