The Valve,safety Relief, cataloged under National Stock Number 4820-01-331-8679, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Deere and Co Deere John Parts Distribution Whse. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-331-8679 |
| Primary Part Number | AT104071 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Deere and Co Deere John Parts Distribution Whse |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Connection Type | THREADED CARTRIDGE ALL ENDS |
| Style Designator | SCREW-IN CARTRIDGE |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Disk Loading Method | SPRING |
| Opening Pressure Setting | 1750.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 355-9001-163 | Parker Hannifin Corporation Div Cylinder Division (USA) |
| AT104071 PRIMARY | Deere and Co Deere John Parts Distribution Whse (USA) |
NSN 4820-01-331-8679 is a Valve,safety Relief, manufactured by Deere and Co Deere John Parts Distribution Whse, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-331-8679 has 2 manufacturer part numbers on file: 355-9001-163 (Parker Hannifin Corporation Div Cylinder Division), AT104071 (Deere and Co Deere John Parts Distribution Whse).
Key specifications for AT104071: Flow Control Device: POPPET; Connection Type: THREADED CARTRIDGE ALL ENDS; Style Designator: SCREW-IN CARTRIDGE; Operating Pressure: 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. 7 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.