The Valve,safety Relief, cataloged under National Stock Number 4820-01-156-8317, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 2 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-156-8317 |
| Primary Part Number | 1257200 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Mounting Facility | THREADED FASTENER |
| Valve Operation Method | HYDRAULIC |
| 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 |
|---|---|
| 1257200 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 25515635 | 5/9 Secondary reference General Motors Llc Dba General Motors Llc |
| 25515635 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 131-80434 | 5/9 Secondary reference Dana Corp Weatherhead Div |
| 2530011568317 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 131-80434 | C/1 Advisory reference — outside the item-of-supply concept Danfoss Power Solutions II, Llc |
NSN 4820-01-156-8317 is a Valve,safety Relief, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-156-8317 has 1 manufacturer part number on file: 1257200 (General Motors Llc Dba General Motors Llc).
Key specifications for 1257200: Mounting Facility: THREADED FASTENER; Valve Operation Method: HYDRAULIC. 2 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.