The Valve,safety Relief, cataloged under National Stock Number 4820-01-039-5972, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Westfield Hydraulics Inc Dba Westfield Hydraulics 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Westfield Hydraulics Inc Dba Westfield Hydraulics Inc (CAGE 53730) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-039-5972 |
| Primary Part Number | 280060 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Westfield Hydraulics Inc Dba Westfield Hydraulics Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 280060 PRIMARY | Westfield Hydraulics Inc Dba Westfield Hydraulics Inc (USA) |
| Reference | Meaning |
|---|---|
| 4820PL1250372 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| P1233-2 | 5/9 Secondary reference Air Dry Co of America, Llc |
| P1233-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-039-5972 is a Valve,safety Relief, manufactured by Westfield Hydraulics Inc Dba Westfield Hydraulics Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-039-5972 has 1 manufacturer part number on file: 280060 (Westfield Hydraulics Inc Dba Westfield Hydraulics Inc).
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 4820-01-039-5972 has DEMIL Code Q. 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.